But, again, we have documented evidence of at least one obscenely wealthy owner looking at a massive luxury tax bill and shrugging his shoulders.
As for your idealized version of the NBA market... I mean these are the guys who pay Rashard Lewis and Gilbert Arenas $100 million dollar deals. Just because you're rich doesn't mean that you're smart, even if some like to think otherwise, and saying something won't happen because "it just doesn't make sense" seems like a leap of faith I'm not willing to take with you.
Beyond that, you're utterly devaluing what a normal NBA player is worth on behalf of the owners, who are a relative constant in the NBA (if one leaves another will take his place) and have a smaller direct effect on the project on the floor -- Not a particularly fair working environment, particularly when so much depends on the overall standard of play.
I would much rather see Reggie Jackson making John Wall money than watching every team nickel and dime 14 of their rostered players in an effort to throw 50-60 million at LeBron. That's just me.