You are just making my point. I agree that, for a scenery developer, is not fair to ask users to pay extra just to get a feature that is STANDARD in FSX, and even a lowly default scenery has.
Which is why, all our airports always had working jetways, starting from Zurich in 2007, when GSX wasn't even in the planning stage.
But adding stuff on 3rd airports that don't have it already, takes a bit of work and cannot be easily automated, so it's fair for AES to ask money for it, and we'll probably would have to do the same, should we decide to do the same.
Instead, we tried to look forward, and assumed that more and more scenery developers will just have standard animated jetways. And in fact, it's happening already, and if there are still developers out there insisting doing fake/static jetways, you as an user should voice your opinion about it.