Eh it'd be much more impressive, and believable if any of the games they released were good. I also wouldn't count on ANY studio still being around in 100 years. Even we ignore the stupidity here, like the fact that in even 20 years it'll be likely not a single employee will still be working in the studio, so would it still really be the same studio? Or that AI will likely completely change the industry, or perhaps something else even? Why play video games, if you can play lucid dreams, or holodecks? Or even better yet, will Xbox still even be worth Microsoft dumping money into in 100 years? Xbox has been nearly a 15-year slump, and in the immediate future, it doesn't seem at all likely to even change in a slightly positive direction. I could see Xbox as a whole not lasting another 20 years with the direction they've been continuing.
Like ignoring all the things that in the next 100 years will likely make the studio nonexistent, it's such a volatile industry, that you can end up on the chopping block even when you do have a great track record, if you end up with one major miss. We've seen it happen to far better studios.