C65
I'm not sure that you could round up a lot of new developers for a new 8
bit machine. Look at the problems the Amiga has with support, and there
are millions of them in existance.
A C65, would require people to take a chance developing for a 0 installed
user base.
If you are looking at selling these in developing nations, then you have
to write programs in those languages.
I strongly doubt that you could sell C65s in Western Europe, or the U.S..
After all, it wouldn't run Windows.