Except you're contractually obligated to that 30 year mortgage. You can't survive financially without a job either. Makes about zero sense here, because in your examples you need another willing party to get you out of your current one. These guys leave themselves with an unknown variant, all while leaving their current school in limbo.
A guy like Caleb Williams for instance. "Hey, I don't want to play here or be a Sooner, but I may if I don't get or find what I want." How can a team plan and work, and even function like this? In work society we are seeing it daily where businesses can't function or make it due to flaky and non-dedicated workers.