The changes and additions that Windows 7 brings are more significant than you think. It's hardly a service pack because, as the name suggests, it would only pack services that need fixes. Although Vista isn't what many expected it to be, it's still fully functional. Windows 7 looks similar because it takes the best ideas of Vista and makes the rest of it better.

I fully agree, but at the same time, it also prevents some company to claim that it has the copyright of something that belongs to the "people".

The average Joe must not know what DRM means to experience the implications of it. I hate car analogies, but you don't have to be a greasemonkey to understand that something is wrong with your car.

The average Joe will run into DRM restrictions, and;

..ask a friend about it (or)
..google it (or)
..curse and never use the service again