Not saying money is the sole decider, but it helps. Also the difference between what you can donate to a candidate (like $3000) and what you can donate to the DNC (like $40000) is… quite large. Like 12x the amount of money… Kamala does not have 12x the amount of money as trump.
Also, you really think there’s just like… two blocks of voters in the primaries… and they’re exactly equal in number, and exactly spread evenly between all states and districts? Progressive/leftist/whatever you wanna call the “far left” makes up a fairly small amount, but one that literally turns out in higher percent than any other voting block. It does not mean they outnumber EVERYONE ELSE COMBINED.
Here’s some data from Pew Research on it. You can look for some others they’ve done on similar stuff.
The rich is the correct minority to blame. Republicans or not.