There's another thought I had with this. We are just renting a curated collection of games, right? But still, renting. So, what does it even matter to us if it stops being sustainable for MS and they stop the service? We got what we paid for, in the end. We lose absolutely nothing of our own. I'm fine with that, in the event this crashed and just stopped being a thing. It's not like I think I'm buying the games or whatever, I'm just paying for a service. If I paid monthly, at the end of the month I'd decide if it was fine or not, each time I paid.
What does it even matter to me, if I am getting what I'm paying for, apart from worrying about it having a future, of course.
And I think most people who is asking the question may not even a subscriber. Let Microsoft decide if it's worth it for them, as it's them who are on the other side of this business. For me it's working, so let me peacefully enjoy it while it lasts (and I hope it lasts for a long, long time).
Also, this business model doesn't mean you can't use a different one at the same time. I haven't stopped buying games or anything. I'll still buy whatever game I'm really interested in owning, at launch even. Or just games I wanna try and aren't on the service (yet/anymore/whatever). I also own other platforms anyway, and don't use services on them, btw.
Do people not buy BD anymore because of Netflix?
Even better, as I find the Spotify comparison more apt than Netflix. Do people not buy CDs anymore because of it? I don't think so, and I think everyone involved thinks the same. Game Pass is not a substitute of the established model and won't change the industry that much in the long run. So as a different kind of thing, it sure must be sustainable and, more importantly, profitable. But as I said, what should we even care if we are at the other side of business and we are getting what we pay for.