I don't think so. No top player bout to go to the warriors to ride the pine or to Cleveland to go sit behind vets. Cats ain't gonna be on that Kentucky shyt in the league cause they gotta get that second contract.
You talk about cats not being on that "Kentucky" shyt but they do it at Kentucky and other schools with their actual NBA career on the line. So what exactly is stopping them from doing so with extra money on the line, that really isn't on the line when you think about it? Harrison Barnes just got a max deal for avg 12 ppg on a winning team (after shytting the bed in the Finals). Jordan, Drummond, Tristan Thompson all cashed out on the strength of being garbage men who can roll to the rim. TT wasn't even the starter when he got his deal. Teams will throw money at pretty much any young dude that shows potential.
You look at those squads and every spot is not set in stone. Every squad has a weak spot or a spot that could be better. If an Embiid or AD or KAT or Porzingis type talent comes out of college this year, the Cavs aren't gonna say "not sure if we are gonna be able to get you minutes, we got Tristan you know?" Same with the Warriors and ZaZa. A generational talent would get K. Love or Draymond or pretty much everyone but Bron, Kyrie, Steph, or KD bumped as well. And even if dudes don't get starting gigs it's not like CLE or GSW has a bunch of dudes on the bench that are better than Simmons or KAT

Imagine the 03 Lakers bringing in Bron to play with his favorite player and another guy that he looked up to in Shaq or the 97 Lakers selling Duncan on playing next to Shaq and all their young perimeter studs? What reason would Bron have to pick CLE over that? Same for Duncan and SA. No one with options is gonna chose to play on shytty teams in cold weather/irrelevant cities. You remove any chance for a non-glamour team/market with that set up.