GTA Online has generated at least $500,000,000 in revenue, based in part on a significant cash-generating tool contained in the game.
GTA Online has the potential to achieve the greatest profit margin of any game created in the GTA franchise. In November 2015, Take-Two CEO Strauss Zelnick announced that two years after its initial release, nearly 8,000,000 people were still playing GTA Online each week.
The Houser brothers had little interest in GTA Online, and did not focus on its development, all as reflected in Bugstar.

That's like damn near more than the amount of people who play CS:GO in a week

This is VERY alarming because this is obviously going to affect the next GTA game and probably other games. Games will probably be more focused on online only content and MP day one with season passes and shyt.