Why did MGS 4 fail to move consoles?

[LG[Infinite]]

At least you guys have the 80GB. Out here in PAL country there's not an 80GB in sight...

And on topic: MGS is about as core a title as you can get. You're not going to get an extended boost in hardware, because frankly most of the people who are going to buy a PS3 for it are going to buy a PS3 straight away. And let's be honest, MGS has never been easy to approach. I wouldn't be surprised to find that many of the buyers of MGS4 have have already played the previous games, certainly, it's a lot harder to get into that say... Mario Kart or something.