Asobo wish to support MSFS customers effectively and the way they can do that is to provide basic aircraft and experiences that they control the narrative of. I get it - money, customer service etc. That’ll be why they bought a lot of the independent studios and brought them onboard.
I don’t believe MSFS or Asobo actually care that much about third party developers any more and they’re very much second fiddle to the core offering.
But what a big F you to the development community that has made this franchise what it is.