I couldn't find any incentives as a solo game developer earlier this year. I developed a game with React Native and thought it would be interesting to release a Windows Phone [1] version... but it was not. I think I only had one person install it, and that was a friend who I asked to try it out. Of course, the main reason is probably that my game is just not very compelling, or I failed with marketing. But I definitely won't be launching any more apps for Windows.

I would have loved to get a free Windows phone so I could have tested the game on a real device, but it makes sense that they can't just give away phones to random indie developers.

[1] https://www.microsoft.com/en-us/store/p/sudoblock/9np72dfcvk...