I think you are forgetting there are few jobs, high unemployment and that there's a recession (.9% unemployment shy of a depression) outside of the cocoon of the university. This lowers the available tax revenue. I assure you that no one who is now unemployed is unemployed voluntarily. They don't have a choice of whether or not to pay more taxes.
Taxpayers can only pay money they have. There is a limit. Education is a luxury and if it comes down to having roads and being able to eat vs. subsidizing people's education, I'll take the roads and dinner. Hard times means less money to go around. I know that limited funds are a concept and reality that is hard to swallow for liberals, but in the real world we have to live by a balance sheet. You can't pay out what you don't have. You don't need an education to survive, and if you work and sacrifice enough, you can still get one. I'm having trouble, given the current state of the economy, seeing what the problem is with needing to charge what it costs for an education.
Education subsidies benefit few people. Roads, police, fire department, airports etc benefit everyone. The needs of the many outweigh the wants of a few.