Maybe you should read it again - "
they have the privilege of coding/designing ...."
I dont think anyone spends their time and money coding just for the privilege, maybe im wrong - do you know anyone who does ?
As it happens, I believe it was said tongue in cheek anyway
You're right btw, vBulletin doesn't offer any incentives, neither does IPB afaik - but that in itself isnt really a valid reason for XF not to - unless of course you think it should also remove any features that vb and IPB dont have.
JFYI, I dont believe for a second that they will offer anything, and if I were in their position, I wouldnt either - id wait and see how things pan out before doing anything. Its quite clear there will be quite a few initial coders and designers.