Yesterday, 21:36
While I'm sure they'll respond for themselves here soon, I'm afraid that I am partly responsible for the appearance of "Big Radials", in that I encouraged their founder to go for it and build a commercial aircraft for sale on MSFS :)
The reason it's possible is down to a combination of decent, hard-working developers communicating and helping each other out, which we've been doing for some time now on a private Discord channel; the tireless assistance of Asobo in helping us learn the SDK and our developing of a Blender exporter for MSFS, which was mostly championed and created by Otmar at Wing 42; and the availability of freeware packages such as Blender, GIMP and others that allow devs to learn without the crippling expenditure that was often required in the past.
But it's no easy...