You have to say this for Democrats: When Barack Obama was elected in 2008 with decisive majorities in both the House and Senate, they recognized the power of the moment and the unique opportunity they had.
Democrats had wanted to achieve government-run health care since the New Deal. Bill Clinton tried in 1993-94, but he made the mistake of putting a completely inept person in charge of it. He also didn’t have the numbers Obama had. Democrats weren’t going to fumble this opportunity away, not matter how unpopular their proposal was, and no matter how much political capital they would have to spend to do it.