IMNSHO, the Amiga is an enthusiast's machine. They are like classic old cars. They can't go as fast as modern machines, they aren't as economic to drive, they don't have ABS, traction control, air conditioning and they are difficult to find spares for and costly to maintain. However, just like classic cars, they appeal to us for the fun factor.
I think Hyperion stated naught but the truth when they pitched OS4 with the "remember when computing was fun?" line. The time when it was a relevant platform for serious work is all but past. Rival hardware caught up and left it behind a long time ago now.
Instead of worrying about how it will conquer any given market, why not simply enjoy it for what it is? A classic piece of engineering that showed us what the future of personal computing was going to be like. Keep your machines well serviced and maintained, keep using them and pimping them out if you wish, but accept the fact that outside of ourselves, nobody else is interested in the machines, therefore it has no tangible future outside the community.