Teddy Roosevelt’s trust-busting crusade ultimately broke up Standard Oil. Though Goldman did outlast three of its four major rival firms during last fall’s meltdown, it is not a monopoly. And there is one other significant way that our 21st-century vampire squid differs from Rockefeller’s 20th-century octopus. Americans knew what oil was, and they understood how Standard Oil’s manipulations directly affected their pocketbooks. Even now many Americans don’t know what Goldman’s products are or how it makes its money. The less we know, the easier it is for reckless gambling to return to capitalism’s casino, and for Washington to look the other way as a new financial bubble inflates.

Image Frank Rich Credit... Fred R. Conrad/The New York Times

As Wall Street was celebrating last week, Congress was having a big week of its own, arousing itself to belatedly battle some of the corporate suspects that have helped drive America into its fiscal ditch. The big action was at the Senate Finance Committee, which finally produced a health care bill that, however gingerly, bids to reform industries that have feasted on the nation’s Rube Goldberg medical system. At least health care, like oil, is palpable, so we will be able to keep score of how reform fares  win, lose or draw. But the business of Wall Street, while also at center stage in a Congressional committee last week, is so esoteric that the public is understandably clueless as to what, if anything, the lawmakers were up to, if anyone even noticed at all.

The first stab at corrective legislation emerging from Barney Frank’s Financial Services Committee in the House is porous. While unregulated derivatives remain the biggest potential systemic threat to the world’s economy, Frank said that “the great majority” of businesses that use derivatives would not be covered under his committee’s much-amended bill. It’s also an open question whether the administration’s proposed consumer agency to protect Americans from mortgage and credit-card outrages will survive the banking lobby’s attempts to eviscerate it. As that bill stands now, more than 98 percent of America’s banks  mainly community banks, representing 20 percent of deposits  would be shielded from the new agency’s supervision.

If it’s too early to pronounce these embryonic efforts at financial reform a failure, it’s hard to muster great hope. As the economics commentator Jeff Madrick points out in The New York Review of Books, the American public is still owed “a clear account of the financial events of the last two years and of who, if anyone, is seriously to blame.” Without that, there will be neither the comprehensive policy framework nor the political will to change anything.

The only investigation in town is a bipartisan Financial Crisis Inquiry Commission created by Congress in May. It is still hiring staff. Its 10 members are dispersed throughout the country, and, according to a spokeswoman, have contemplated only a half-dozen public sessions over the next year. Such a panel, led by the former California state treasurer Phil Angelides, seems highly unlikely to match Congress’s Depression-era Pecora commission. That investigation was driven by a prosecutor whose relentless fact-finding riveted the country and gave birth to the Securities and Exchange Commission, among other New Deal reforms. Last week, we learned that the current S.E.C. has hired a former Goldman hand as the chief operating officer of its enforcement unit.