Shifty Geezer said:I don't think anyone really knows what the percentage is, or how many numbers, and with the new PS2 there's no way of counting. Live! needs an account, where a new PS2 can go online without anyone knowing about it.
Well we can take the number of network adapter sales as a minimum. The slim PS2 obviously does muddy the numbers, but I've seen figures for the numbers of online users thrown about in various interviews.
But it is another interesting way to look at it. With Xbox, online really wasn't standard. You have to pay x dollars per year to play online. That's as optional as anything. Obviously the HD is free to use in every Xbox, but its most compelling use by devs is often tied to online games.
edit - Some googling suggests that 590k network adaptors were sold by the end of 2002. The network adaptor only launched in Europe in 2003. If I find more up to date figures I'll post them.
edit 2 - there's an article summing up PS2 online by end of 2003 here:
http://www.gaming-age.com/news/2003/3/12-39
By February of 2004, Sony was claiming 1.5m online users, which at the time was twice Xbox's figure at the time.
By the end of 2004, they were claiming 2.4m PS2s were connected. This figure can't be including all slim PS2 sales till the end of 04, since it'd be much higher if that were the case