ram1009 :
...I believe software will become a utility payment like phones or water or electricity. I believe it's inevitable to keep money flowing to keep their jobs. BTW, if what you say is true ( one license per box) then why have I been able to re-install XP so many times? I did the same with W98, W95 & plain old "W". So, I don't know what "beginning" you were at.
For the first part, Microsoft aren't going to expend the resources to track down all of the single users
(pirating) their software. Too much effort for too little return. They can, do, have, and will go after people doing this on a larger scale for resale purposes. This does mean that home users can operate more or less with impunity.
Understand that a Retail licence entitles you to move the OS from machine to machine, just so long as you only have it installed on one at a time. An OEM licence is supposed to be tied to a single computer. Microsoft's licencing terms have always been this.
It's just that people don't care and (re)install the operating system anyhow. It's not worth MSFT's while to expend the effort to track all of the single users. Not to mention
(I'm sure their perspective on the matter is) that if a given user is going to pirate something, then they'd rather you pirated their stuff rather than switch to the free alternatives. In short: They know very well people are doing this. Just that their approach to the problem is a pragmatic one, rather than a dogmatic one.