There are around 12,000 people in the U.S. worth $ 500 million or more.
IMO, there are at most 150 top tier NCAA basketball players. ( 30 teams with 3 each and 20 teams with 2 each) About 25 of those are elite. ( first round picks - minus foreign selections ).
That is a huge amount of potential $$ chasing a very defined subgroup of people. That subgroup cannot be quickly expanded. Therefore the $$ will chase the players and we're nowhere near what will be paid in the future.
Programs and their boosters will need to decide if they are going to pay and play or just watch the real players from the sideline and complain.