Donald Trump won the Electoral College (though not the popular vote) on the strength of overwhelming support from working-class whites, who feel left behind by a changing economy and society. And they’re about to get their reward — the same reward that, throughout Mr. Trump’s career, has come to everyone who trusted his good intentions. Think Trump University.

Yes, the white working class is about to be betrayed.

The evidence of that coming betrayal is obvious in the choice of an array of pro-corporate, anti-labor figures for key positions. In particular, the most important story of the week — seriously, people, stop focusing on Trump Twitter — was the selection of Tom Price, an ardent opponent of Obamacare and advocate of Medicare privatization, as secretary of health and human services. This choice probably means that the Affordable Care Act is doomed — and Mr. Trump’s most enthusiastic supporters will be among the biggest losers.

The first thing you need to understand here is that Republican talk of “repeal and replace” has always been a fraud. The G.O.P. has spent six years claiming that it will come up with a replacement for Obamacare any day now; the reason it hasn’t delivered is that it can’t.

Obamacare looks the way it does because it has to: You can’t cover Americans with pre-existing conditions without requiring healthy people to sign up, and you can’t do that without subsidies to make insurance affordable.