GTA, the game that keeps on selling

According to Steamspy, Rockstar was able to move about 300,000 copies of GTA V during the Steam autumn sale. To put that into perspective, Tyranny has sold a total of about 100,000 copies according to Steamspy estimates. 

Worth mentioning is also Civ VI at 1.3m sold copies and XCOM2 at 1m according to Steamspy. With consoles transition to digital distribution I don't really see why Take-Two should be trading at half the EV/Sales multiple of EA and ATVI.

I am inclined to buy some Take-Two stocks here.