Is it really that hard to comprehend? You either buy the games and play them, or you pay a fee every month to play them. Buying the games isn't necessary if you pay the subscription.
I think what GMUN is saying is that people value owning something. there's no lack of comprehension going on here, just valuing different stuff I guess. I can't speak for anyone else but having a dedicated copy of something and not being at the mercy of the subscription service is pretty important for me.