So they voted for a billionnaire corporate exec because they were tired of corporations and billionnaires? And what about working class black/latino voters...how come they didn't go for Trump in that case since they're worse off?

Let's not be in denial here, it won't help. Trump didn't win because of economic policy, he won because he convinced white voters that they were in a race war and on the verge of losing "their" country.
I'm all for progressive policies (and was a Bernie voter in the primaries) but let's be reality, few Trump voters will be swayed. Only way for the Dems to win is for voters on our side to actually turn out in elections. And this Bernie vs. Hillary shyt is exactly what we don't need for that to happen. We have to dead this "I'm not going to vote if my guy doesn't win" mentality.