You're just going to ignore the democratic party coordinating all the candidates to drop and put their support behind Biden while funding a PAC to keep Warren in the race to split votes with Bernie right before super tuesday? Plus having their big media buddies run the story of "the Biden miracle" after getting democratic party stooge Clyburn to endorse Biden and come out ahead in South Carolina (the state that went to Trump in the general election, by the way).

Also, the superdelegates made it look like the lead that Clinton had was so insurmountable that it was pointless to turn out for Bernie.

If you think these have no effect then, by the same logic, you'd think that billionaires spending tons of money on PACs has no effect.