Alex the Great rightly said, fortune favors the bold. If no league wants to show up the pba by creating better, more internationally competitive flavored, or more exciting games, none may deserve fan and commercial interest. If they want to be smalltimers, then smalltimers they can only be.
You think that say an ilocos norte team will have less fans than ginebra against say a sokor top team? Or, would a manila team, funded by many manila firms, spend less on a prestigious match against a top chinese team?
Besides, if the interested league wants to play by fiba rules, then it gets the fiba approval, and not the pba.
That league will have the glory of selecting players for national teams.