So if someone wants to make singleplayer only game [looks @ HS] I hope that they dont need to spend so much memory on OS. I mean why bother with Keyboard [7mb], Online Startup [8], Friends [24], and bunch of other stuff???
You don't have to. And that list is inaccurate.
There is 84mb put aside by Sony...and then the friends list, keyboard etc is ON TOP OF that 84mb