Republicans failed to repeal and replace the Affordable Care Act early Friday because of divisions within their own ranks, and because they tried not only to repeal and replace the ACA but also to cut and cap the Medicaid program, generating opposition from many red-state governors and their senators.

But most of all, they failed because they built their various plans on the false claim — busted by the Congressional Budget Office — that they could maintain the same coverage levels as the ACA and lower premiums and deductibles, while at the same time slashing about a trillion dollars from Medicaid and ACA subsidies and softening the ACA’s consumer protection regulations. Had they succeeded, they would have won a big short-term victory with their base, which strongly supports repeal, but suffered the consequences in subsequent elections as the same voters lost coverage or were hit with higher premiums and deductibles.

The challenge now is to stabilize the ACA’s insurance marketplaces. They are not in free fall or imploding, as President Trump suggests, and in most markets insurer profits have been improving. But these are fragile markets, especially in rural areas, and there are 38 “bare counties” where no insurer currently intends to participate in 2018. About 20 percent of marketplace enrollees have access to only one insurer, with the biggest problems in rural areas.

But one thing is clear: 59 percent of the public says President Trump and the Republicans are now in control of government and are responsible for making the ACA work, and 74 percent says they should “do what they can to make the law work.”

It’s apparent what needs to be done to stabilize the marketplaces and who owns the ACA going forward. It’s no longer Obamacare; it’s now just the nation’s health insurance system.