I agree it's difficult to make a living solely based on producing software for the AmigaOS and other Amiga-inspired flavours, but that does not mean you can't earn some money by developing for multiple platforms.
Hollywood and M.A.C.E. developers readily spring to mind but there are others.
TrevoD
Yes but them and Cherry Darling /SealofAction (same guys?) do have a crossplatform framework already. If one want to do the same they'll have to develop that framework first. Maybe if such framework is sold for use by outsiders then you'll maybe see more people involved in creating new content.
Kamelito