Here is where I will disagree. Case in point. You or I purchase a copy or license to use a microsoft product, say Windows. Every time we go live on the internet our pc/software checks to make sure our "agreement" is valid. Check it out, it's part of your "user" agreement. If you or I have a pirate copy sooner or later we would be shut down until we paid up to the man (Microsoft). The burden of "ownership" or "authorized user" proof is on you or I.
All of us here are using some type of software that, although we paid a bunch of money for, we do not "own", but we are allowed to use as long as we do not violate the terms of use.
It's simple, if you paid for it, you have the disc to prove it, then show them and be free to use them, just like using the Microsoft "key codes".
Case in point #2.
I paid for and use Karma. When I purchased a new laptop I had to "prove" to Bob Latshaw that I the original copy (key code for ONE machine) of the software that he "owns" in order to use the software on the new machine.