But won’t that mean that everyone will just go to universities in other States?
That depends on how you value your college degrees. If degrees represent real useful career knowledge, then sure. But if they're just tokens handed out to a social network, then why would I leave Florida U if I know an FU degree will land me a good job in a high-paying Florida business? If I'm just working the sales desk of a construction company or doing entry level accounting on my way to completing my CPA license or Real Estate License, who cares whether U. Miami or Florida State is a diploma mill?
The people with no brains to drain will stay in Florida presumably.
There are plenty of very good doctors that come out of Baylor and Brigham Young University, despite both campuses being notoriously far-right. You don't need a liberal education to learn to code. You don't need it to update actuarial tables at a big insurance company. You don't need it to help run a multi-billion dollar media empire.
There is no shortage of good money in cultivating a large loyal contingent of right-wing academics, either. Certainly Milton Friedman and Karl Ichan and Charlie Munger did very well for themselves.
And where will the drained brains even go? It isn't as though Silicon Valley or Wall Street are lacking for far-right ideological leaders. In the end, you're still going to end up working at Exxon or Apple or FOX Media or Goldman Sachs, no matter how liberal your politics. Moving to California won't save you from Peter Thiel or Ben Shapiro.