College costs would have to be dramatically lowered in order to be acceptable to taxpayers as "free". The books could be downloadable pdfs and one teacher could instruct one course to 1000s via video. They should give college credit for subjects mastered on Khan academy and the like. As long as people could be tested at testing centers where they can't cheat, or some other reliable way. Right now you can listen to entire Yale course lectures and other university classes online, read the books, and retain as much as those that paid. You just aren't given credit.
Free college, with college costing tens of thousands, is doing the same stupid thing but making everyone pay for it. The internet should have been a cost game-changer. For most subjects, no need for brick and mortar, air conditioning, in-person nstructors, commutes, etc...Besides, the average IQ level of college students has dropped over the years. It used to be that only smart people went to college. Many today have no business being there. It's extended high school except you get more intensely indoctrinated and in debt.
College could be much more widely accepted as tax funder funded if they adopted the Netflix vision nstead of clinging on to the Blockbuster model.
That said, no one needs a homicidal Bolshevik wolf in sheep's clothing as president, anyway.