The regular student doesn't have the same leverage so they have to accept it for what it is. What is their bargaining power? If I wanted to leave Seton Hall, I'm sure they would've made some small effort to retain a good student in good academic standing, but ultimately, I was replaceable.
Good basketball players at high-major conferences make contribute to the business of making money for that university. They are important and matter, practically speaking - in a business sense - more than I did or than volleyball players or baseball players do because I, the volleyball, and the baseball players all cost Seton Hall money for the time we were enrolled. Myles Powell made Seton Hall money. So does Kevin Willard. Kevin Willard has the agency to walk away from his contract tomorrow and go coach somewhere else (whatever buyout there is will be taken care of by someone involved in the transaction) and now a Myles Powell will, too.
It'll be more work for coaches to keep recruiting kids in your program, but so it goes. That's why they make millions of dollars a year, to figure it out and deal with it. For they, too, have the option to walk away from their university and go coach in the G League, or sell insurance, or whatever else they think anyone will pay them for.