You can`t steal something that never existed.
There is no direct correlation between ingame money and real money, since there is no way of converting them into real cash. Therefore, regardless of how much money you have / get ingame, it doesn`t cost Rockstar a penny.
So by your reasoning, the cost to operate their multimillion dollar servers (which if free to play for you btw as you don't pay a subscriber fee) is also free for R*?
How about the hundreds of engineers, techs, and IT support R* uses to maintain the servers. Are these employees also free of charge to the company as well?
Why else would they put a real price/charge on GTA$ in the first place?
Wake up and smell the coffee bro
Hey Pot, meet Kettle, what do you think of the BILLIONS they made release day?
And apparently you are unfamiliar with new server systems, they are almost entirely self running. You may have a handful in case something goes awry, but there won't be no QRT force of techs on standby ready to come charging in to save the day.
Why did they put a price tag on it? Why else would they nerf all the payouts? And on top of that start throwing around ad placements for shark cards......"psst...hey player...you could grind this game for a month, or you could slide me 20 badonkadonks and I'll give you a million R* cash."
If they even TRIED to force a subscription for this sh*t they call online, they'd go bankrupt in a day. Lose your character? Cant get it back. Lost your stuff? Can't get it back. Progress got regressed somehow? Cant get it back. What kind of game is this? Lose your sh*t in WoW, they actually compensate you, not tell you "oh tough sh*t" like Rockstar does. Hell man, Trion with Defiance has better customer support than Rockstar.
***Also, what about all the games that still have servers running for players even though the player base has dwindled.( a few examples, Tom Clancy's Rainbow Six games, past Halo titles, hell, Defiance for that matter) Why don't they just shut them down? Like GTA IV, if they want people to play and spend money of V so bad, why havent they shut down IV online yet?
So tell me..
How's that coffee smell?