This blew my mind. If your getting for free why would you buy it. Does game pass have a timer on the games. If I am getting games for 10 dollars a month why would I buy it. Unless this service stops you playing the game a lot and they stop you.
@Vaze23 To my knowledge theres no time limit on how long you can play the game, the reason someone might buy the game tho would be because it leaves the gamepass catalog. PS now does pretty much the same thing with certain games coming and going off the service after a certain amount of time.
@Vaze23 adding to what jpaul said, there's also the not-so-small percentage of people that will buy an indie game full after playing it on the Game Pass in order to support the indie devs