I tried to add more product names but Bing couldn’t handle so many product names that Google has killed.
I am a victim of Google Reader, Google One VPN, Google Podcast, Picasa, Google Play Music, Google for Domains, Stadia.
Xbox Game Pass rotates games all the time. That means if I want to play a 50-hour RPG, I might have to finish the game before it gets rotated out. And Xbox doesn’t make the schedule available.
With Stadia I could purchase games and play it at my own pace, even without a subscription.
Can I Buy The Game I Play on Game Pass?
Yes, you can purchase any game available on Game Pass, which is then permanently saved to your Microsoft account as a digital game.
Though i don’t know if this means you have to pay the subscription to play it or not
AFAIK, you can purchase the games but the purchased games are only playable via Xbox/Windows.
Xcloud is limited to the games available via subscription. Unless they changed this recently.
Official Xbox FAQ says:
The games available to play with cloud gaming vary based on platform and region. You can find the latest selection of titles available for cloud gaming here: Xbox Game Pass Games Library
That means only games in the Game Pass library is playable via cloud.