Well, I get to play a ton of games for cheap and the leaks from 2023 showed that Microsoft is paying 10's of millions of dollars to publishers to put games on there, and they even may be paying over $100 million in some cases. They wanted Jedi Survivor but they figured EA would want $300 million. It was on their list so it was a fake that was at least on their radar.
Moon seems to have signed a console exclusive deal with Microsoft, which likely means that Microsoft can put it on there without paying them much, or anything. MS probably owns the game outright if they paid for the development. But hey, at least they did find it and give us a great pair of games.