@Gebrochen
IMHO you should learn to code and start creating your own games. It's fun :-)
You could do amiga-style games of platforms. You could use SDL so your game runs on OS4/AROS/MorphOS/etc with modern hardware more or less smoothly.
Do your own games for fun. And that's all. If you abandon your project open source your code and gfx so other people can learn or continue with your job.
Selling amiga games is not a good idea to earn money.
I would pay for a Starcraft, Diablo or Counterstrike port regardless of being old games. But it won't happen anytime soon. Years ago when the situation was better PPC games didn't sell a lot. Now it's impossible to sell commercial stuff
I think it's better to assume this is a hobby.