>There's a large crowd of people who'd rather buy to own games even if they're on Game Pass

Judging by the reactions I've seen to this acquisition around the internet, this crowd is really not that large.

The average consumer of today does not care in the slightest about owning things, they only care about being able to enjoy whatever the current flavor of the week AAA tripe is for now before the next flavor of the week comes along to replace it. When they're done with a game, they don't care about having it anymore.

You get a discount (20%, I think) if you want to buy a game which is available on Gamepass and you have a subscription.

This way you can fully play the game and if you really want to "permanently" add it to your library, you can do so for less.

Most DLCs are not part of Game Pass, so if you really enjoy a particular game you can still purchase the DLC (at a discount), even without owning the base game. Of course this only makes sense for as long you are a Game Pass Subscriber. You would unfortunately need to purchase the base game from the Xbox / Microsoft Store before you can play your previously purchased DLC.

Even this is changing. A growing number of titles includes the DLC. I suspect that not all of them do due to licensing agreements.