When it comes to importing stuff that was made with illegal hackware I see that differently. This case was unfortunate in that the guy who imported it obviously did not know that the designer had used an illegal copy. But as I said, in the same way if you receive a fake 100-Euro bill the same thing can happen in that the cashier at the Hema store refuses it and you have no rights other than sue the guy who gave it to you.
CAD companies must pay their employees, pay into their health plan, pay rent, heating, taxes and, oh, preferably turn a little profit. Cadsoft's way of protection is, for me, definitely superior to other alternatives such as MAC-lock or those dreaded dongles.