You don't get to run for president without billions of dollars at your disposal and party apparatchiks vouching for you on TV every day for months on end, informing the VBNMW people who to support.
This idea the party leadership and donor class preferences don't matter is painfully naive. Both major US parties are captured by capital and white supremacist elements. That's why they ignore what voters want and insist you work for them instead of the other way around.