You are so right. I'm now going to sue every single computer manufacturer, because on every computer I have ever bought, part of the hard drive space is occupied by the operating system, leaving less free space than advertised!
Fanboi logic at work, I see. There's no difference between 90% free space after the OS install and something like 50% in Surface's case? So if I would sell you a 22" display, but only 12" would be visible - that would be cool, right? I mean the frame takes its toll!
Why aren't there professional fanboi exterminators already?