Eyes on the Prize Money

In his five part tweet (yes, 5/5), John Isner expresses his disdain with the significant 80 percent decrease in the Champion's prize money (60 percent overall) for the Miami Open, which is similar for other tour events. Is a review of lost ticket revenue's against other revenue sources worth exploring to protect player interest? It doesn't impact players like Nadal, who gets a $500K appearance fee for non-mandatory e