You get the scholarship back if the player leaves early. But you actually raise an interesting point. If a program lost the scholarship for 4 years, regardless if the player left early, it would definitely prevent one or two programs from gobbling up all the one-and-done talent every year.
Anybody see the flaws in Wong's offensive game? Nice handle, can jump, finish at the rim, outside shot. I can see him needing to add some size, but I'm extremely optimistic about him being a major contributor immediately.