And this is for the median. Those below him — half of all households — would be shut out of what is considered middle-class life, with the house, the car and the other associated amenities. Those amenities shift upward on the scale for people with at least $70,000 in income. The basics might be available at the median level, given favorable individual circumstance, but below that life becomes surprisingly meager, even in the range of the middle class and certainly what used to be called the lower-middle class.

The Expectation of Upward Mobility

I should pause and mention that this was one of the fundamental causes of the 2007-2008 subprime lending crisis. People below the median took out loans with deferred interest with the expectation that their incomes would continue the rise that was traditional since World War II. The caricature of the borrower as irresponsible misses the point. The expectation of rising real incomes was built into the American culture, and many assumed based on that that the rise would resume in five years. When it didn't they were trapped, but given history, they were not making an irresponsible assumption.

American history was always filled with the assumption that upward mobility was possible. The Midwest and West opened land that could be exploited, and the massive industrialization in the late 19th and early 20th centuries opened opportunities. There was a systemic expectation of upward mobility built into American culture and reality.

The Great Depression was a shock to the system, and it wasn't solved by the New Deal, nor even by World War II alone. The next drive for upward mobility came from post-war programs for veterans, of whom there were more than 10 million. These programs were instrumental in creating post-industrial America, by creating a class of suburban professionals. There were three programs that were critical:

The GI Bill, which allowed veterans to go to college after the war, becoming professionals frequently several notches above their parents. The part of the GI Bill that provided federally guaranteed mortgages to veterans, allowing low and no down payment mortgages and low interest rates to graduates of publicly funded universities. The federally funded Interstate Highway System, which made access to land close to but outside of cities easier, enabling both the dispersal of populations on inexpensive land (which made single-family houses possible) and, later, the dispersal of business to the suburbs.

There were undoubtedly many other things that contributed to this, but these three not only reshaped America but also created a new dimension to the upward mobility that was built into American life from the beginning. Moreover, these programs were all directed toward veterans, to whom it was acknowledged a debt was due, or were created for military reasons (the Interstate Highway System was funded to enable the rapid movement of troops from coast to coast, which during World War II was found to be impossible). As a result, there was consensus around the moral propriety of the programs.

The subprime fiasco was rooted in the failure to understand that the foundations of middle class life were not under temporary pressure but something more fundamental. Where a single earner could support a middle class family in the generation after World War II, it now took at least two earners. That meant that the rise of the double-income family corresponded with the decline of the middle class. The lower you go on the income scale, the more likely you are to be a single mother. That shift away from social pressure for two parent homes was certainly part of the problem.

Re-engineering the Corporation

But there was, I think, the crisis of the modern corporation. Corporations provided long-term employment to the middle class. It was not unusual to spend your entire life working for one. Working for a corporation, you received yearly pay increases, either as a union or non-union worker. The middle class had both job security and rising income, along with retirement and other benefits. Over the course of time, the culture of the corporation diverged from the realities, as corporate productivity lagged behind costs and the corporations became more and more dysfunctional and ultimately unsupportable. In addition, the corporations ceased focusing on doing one thing well and instead became conglomerates, with a management frequently unable to keep up with the complexity of multiple lines of business.

For these and many other reasons, the corporation became increasingly inefficient, and in the terms of the 1980s, they had to be re-engineered — which meant taken apart, pared down, refined and refocused. And the re-engineering of the corporation, designed to make them agile, meant that there was a permanent revolution in business. Everything was being reinvented. Huge amounts of money, managed by people whose specialty was re-engineering companies, were deployed. The choice was between total failure and radical change. From the point of view of the individual worker, this frequently meant the same thing: unemployment. From the view of the economy, it meant the creation of value whether through breaking up companies, closing some of them or sending jobs overseas. It was designed to increase the total efficiency, and it worked for the most part.

This is where the disjuncture occurred. From the point of view of the investor, they had saved the corporation from total meltdown by redesigning it. From the point of view of the workers, some retained the jobs that they would have lost, while others lost the jobs they would have lost anyway. But the important thing is not the subjective bitterness of those who lost their jobs, but something more complex.

As the permanent corporate jobs declined, more people were starting over. Some of them were starting over every few years as the agile corporation grew more efficient and needed fewer employees. That meant that if they got new jobs it would not be at the munificent corporate pay rate but at near entry-level rates in the small companies that were now the growth engine. As these companies failed, were bought or shifted direction, they would lose their jobs and start over again. Wages didn't rise for them and for long periods they might be unemployed, never to get a job again in their now obsolete fields, and certainly not working at a company for the next 20 years.

The restructuring of inefficient companies did create substantial value, but that value did not flow to the now laid-off workers. Some might flow to the remaining workers, but much of it went to the engineers who restructured the companies and the investors they represented. Statistics reveal that, since 1947 (when the data was first compiled), corporate profits as a percentage of gross domestic product are now at their highest level, while wages as a percentage of GDP are now at their lowest level. It was not a question of making the economy more efficient — it did do that — it was a question of where the value accumulated. The upper segment of the wage curve and the investors continued to make money. The middle class divided into a segment that entered the upper-middle class, while another faction sank into the lower-middle class.

American society on the whole was never egalitarian. It always accepted that there would be substantial differences in wages and wealth. Indeed, progress was in some ways driven by a desire to emulate the wealthy. There was also the expectation that while others received far more, the entire wealth structure would rise in tandem. It was also understood that, because of skill or luck, others would lose.

What we are facing now is a structural shift, in which the middle class' center, not because of laziness or stupidity, is shifting downward in terms of standard of living. It is a structural shift that is rooted in social change (the breakdown of the conventional family) and economic change (the decline of traditional corporations and the creation of corporate agility that places individual workers at a massive disadvantage).

The inherent crisis rests in an increasingly efficient economy and a population that can't consume what is produced because it can't afford the products. This has happened numerous times in history, but the United States, excepting the Great Depression, was the counterexample.

Obviously, this is a massive political debate, save that political debates identify problems without clarifying them. In political debates, someone must be blamed. In reality, these processes are beyond even the government's ability to control. On one hand, the traditional corporation was beneficial to the workers until it collapsed under the burden of its costs. On the other hand, the efficiencies created threaten to undermine consumption by weakening the effective demand among half of society.

The Long-Term Threat

The greatest danger is one that will not be faced for decades but that is lurking out there. The United States was built on the assumption that a rising tide lifts all ships. That has not been the case for the past generation, and there is no indication that this socio-economic reality will change any time soon. That means that a core assumption is at risk. The problem is that social stability has been built around this assumption — not on the assumption that everyone is owed a living, but the assumption that on the whole, all benefit from growing productivity and efficiency.

If we move to a system where half of the country is either stagnant or losing ground while the other half is surging, the social fabric of the United States is at risk, and with it the massive global power the United States has accumulated. Other superpowers such as Britain or Rome did not have the idea of a perpetually improving condition of the middle class as a core value. The United States does. If it loses that, it loses one of the pillars of its geopolitical power.

The left would argue that the solution is for laws to transfer wealth from the rich to the middle class. That would increase consumption but, depending on the scope, would threaten the amount of capital available to investment by the transfer itself and by eliminating incentives to invest. You can't invest what you don't have, and you won't accept the risk of investment if the payoff is transferred away from you.