I agree with you on everything you've said, that's not what I was getting it, the statement was that WiFi and the HDD are 'essential', backed up by the statement that the vast majority of people connect wirelessly to the internet so therefor have the WiFi and would connect their consoles this way..
Just googling,
http://www.fiercewireless.com/story/trend-wireless-users-do-more-online/2007-02-26
So, the end of 2006, 20% of internet users had wireless at home, lets be generous, and say that 'doubled' in 2007, that's still only 40%.. that's not the 'vast majority' which then means WiFi in consoles is not 'essential'..
So assuming that WiFi costs Sony money to put in the console, and thus ould remove WiFi, and reduce the RRP as a result, then easily well over 50% of the people are paying for something they don't need..
I'm not saying it isn't a good idea to have WiFi, it's just that I think people don't realise that in actual fact it's not as prevalent a 'required' feature as people think..
And I know you can use an external HDD in slightly more capacity on the PS3, but It can't be used for game installation i.e. for caching can it? I think that was the point being made for the HDD to be essential?
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