In case of $ony there won't be any cheap memory cards. PS2 anyone ? You'll need to pay about $30-35 for a 20 cent 8M chip, тwo chips even below 20c two pieces of plastic and PCB - 3 bucks will be quite big price for such piece of crap. They ask $30... I think i owe lots of beer to modchip and uLaunchELF developers (don't say anything about AR Max, once it erased my memcard.... grrrrrrrr!!!! ) - folder with PS2 save backups on my PS is about 800Mb.
A don't tell me that Sony's firmware developers forgot about gzip and other stuff like that, they did it on purpose, with games like GT4 and Jak 3 you'll be forced to buy their memcards.
PSP... 2Gb MS Duo costs more than two times more than 4Gb SD...
P.S. Maybe i'll buy PS3, but of course about year or two after launch, i don't want to test hardware for my own money, also i want GAMES, not another SFEX3 or RR 5