It would wind up in OSM which means it will wind up helping much more than just Microsoft.

I hope someone at MS is doing this intentionally. This could be the ultimate tactical move by Microsoft

Getting your competitors most loyal customers to build your platform willingly

"To be used in Bing Maps" is a bit of a stretch. They're models shared by users you can import one by one into your install of MSFS.

Isn't that what Ingress tried to do first? And the Google local guide program seems quite successful.