Look. If I buy Apple OS X, I'll install it on whatever I like, regardless of what the EULA says.
That is totally different to me buying Apple OS X, and then making copies for all my friends.
They are different things, that are governed by different laws. I think that the former is perfectly acceptable, and the latter totally unacceptable.
Most people take the term "piracy", to mean the latter, NOT the former. You, however, seem to apply the term to both, and conclude that because in your head piracy covers both actions, both are just as unacceptable.
I think you'll find the vast majority of people out there agree with my position on this. I'd certainly be very surprised if this isn't the case.