If you wanted to play 60FPS 1920x1080 games and watch HD movies in 2006/7 would have cost 5x as much asa PS3......only a lunatic solution then. Sure 4 years on it's only 300-500 more but don't compare powerful machines technically with that NintenTOY for babies and single mums 
Good one
But Amiga hardware isn't getting cheaper also, sure the low end A500 and 600's are cheap.
1200's/2000's is already a bit harder.
A3000's/4000's are getting to the point of costing near to big powerful pc's.
And I haven't even started on PPC cards.
PS3's and Nintendo's are for the masses, just like PC's and Mac's, but everything else is a hobby.
And this can get a quite expensive hobby if you go a little bit further.
Sure, I'd like to see a better OS than OS 4.1, but I'm not going to spend a boat load of money for new hardware and an OS that can't do modern things like we do today.