The slickness of the eye-candy attracted a lot of people to Macs, and that is antithetical to the view a lot of Amigans hold, so the platform cannot keep up let alone take a new and radical approach.
Interestingly, it is because the Amiga was radically different and full of eye candy that got it started back in the mid 80s. Back then it attracted the artists and gamers who exploited it's unique capabilities. But the artists have abandoned the platform for greener pastures, those left behind marvel at the efficiency of a system that can't compete with modern systems. Sure the internal design of the Amiga is a textbook case on how to do so many things right, and because of that the Amiga could have scaled much better in today's world, but it never had the chance. Anyway, my point is, the Amiga can only stand out once again with radical changes and enough eye candy that will blow everyone's socks off. And who knows, perhaps this economic calapse can give room to new opportunities? One can hope I guess.