Look at who the USAmerican people voted for despite all their hate for the health insurance industry: a bunch of crooks that make the industry profitable on the backs of their voters.
People can't help themselves but vote against their interests.
You're ignoring the many people who have been disenfranchised, their registration purged from the rolls at the last second, votes thrown out, intentionally giving certain areas only one voting location for many many people. There's tons of reasons why someone might not vote that are out of their control.
That describes both parties. There's a reason none of the dems are taking advantage of this moment to show the overwhelming majority that they want the same things.
Both candidates were pro-institution. Let go of the delusion that Harris was somehow a champion of the people. She is the system. The only reason she got the amount of votes she did is because she was the only viable non-trump vote possible. The DNC tried to force another neo-liberal on us, and the people stayed home.