Again it's a matter of price, you produce an Amiga clone for under a hundred quid you may have something. You produce it for fifty quid it will sell a fair number, in the thousands perhaps. But that's not likely to happen, nobody but a collector is going to spend two or three hundred quid on a recreation of 15 year old technology when they can get a modern computer for the same amount.
Basically the price determine the amount of sales. The number of units produced determines the price. There's no point on those curves that works out for both producer and consumer. Am Amiga clone can't compete in the same market as a Wii/PS3/X Box, it needs to be far cheaper than those to sell in a semi-significant number...
KMOS/Amiga Inc has the right idea but the wrong games. Give people a way to mindlessly load Amiga games on modern equipment and you have something.