Yeah, only Fedal/American/British/French players are important for them.
I admit Fedal has been a cash cow and has done a lot for the sport, but ATP should've known it couldn't last forever and needed to develop another one or a multi dimensional rivalry. It's not mutually exclusive. The more, the better.
I bet besides Nole fans, the tennis world (especially ATP) thoroughly wanted Andy to win the AO final.
TV Rights and sports industry
Serbia is a little country.
I Think it's very risky that the ATP are willing to put the futures of tennis in the hands of 2 players.