Liberals believe stuff, they just don't believe anything is possible. They believe in a ton of disparate things they pick up in their ideological shopping cart that have nothing to do with each other and then jam them all together, regardless of contradictions or outright mutual exclusivity. This creates fundamental structural impossibilities in their belief system, and they just accept it.

They believe in equal opportunity at the same time and with the same intensity as they believe that rich parents should be able to help their children get ahead. It's impossible to have both, and they reconcile this by saying "perfection is the enemy of the good" and then find some stupid horrible middle ground. Instead of just eliminating debt so everyone has equal opportunity to go to college, we eliminate the debt for Pell Grant recipients who start a business that operates for three years in a disadvantaged community.