Yeah, I also think Rockstar wants money and so they only care about Gta.
I'll be honest, sure Gta V is a great game, but Rockstar is starting to do the same game over and over again, in Gta San Andreas there are a lot of more thing you can do even when you finish the game.
Bully was very unique at the time it came out, I hope that Bully 2 (if it comes out) will have many things to do.
If Rockstar release Gta VI and then Gta VII or any other Gta game in a row I might become mad.