That's right, and that's why i have a Wii... and a DS... :)
And i don't have the time or money to play more games: why spend 400-500 euros on a PS3/360 when with that money, i may buy 10 to 20 games (new or secondhand) for my two favorite consoles?
But if i was very rich and wanted to play ALL the best home console games out there, i think i'd have a PS2/Wii/360 combo... with backward compatibility and all the arcade/virtual console games, you'll then have access to most of the best games of the last 20 years released on Nintendo, Sony, Sega and Microsoft consoles... and only miss a handful of PS3 exclusives, not worth the price of the console yet...
"A beautiful drawing in 480i will stay beautiful forever...
and an ugly drawing in 1080p will stay ugly forever..."
