Apologies I tend to ramble on Friday nights might have something to do with what I am consuming.
Aircraft are a little different people see it as a one off purchase and then they have that plane. I myself bought a number from PMDG for FSX. Its the psychological thinking of… I spend most of my time in the aircraft and I’m only at the airport for takeoffs and landings. I also have a number of purchases from Orbx who I find to be very good at what they do. I am waiting specifically on their F86 to be ported over to MSFS 2020. Fell in love with that plane after downloading from Section F8 F-86 Homepage
I’ve played around with Blender and the SDK etc so I know the man hours are up there for higher end Airports. All I’m saying is I would find it hard to justify to many Airport purchases on what I earn 