While this is not cool to see, it also very much seems to be against the rules of NIL. If the rules are followed, it doesn't end up like this. These deals are clearly contingent on the players being at Miami, and that's not supposed to be allowed. If they were following the rules, Wong could transfer if he wants to, but still do his advertising that he signed up to for LifeWallet, and still get his money. And if they were following the rules, a deal would not have been in place for Pack even before he picked Miami. Clearly it was used to entice him there.
The right way to use NIL is for deals to be put in place for players that are ALREADY at a school, and the athlete then fulfils their advertising responsibilities in order to get paid their money. Those deals should never be spoken of before a kid signs with a school.