Some context is necessary here:
Can Blizzard swear on the US Constitution that their authentication servers will be available for free in 20 years?
No but looking at past behaviour and extrapolating when they bring the servers down they will put out a no-cd patch.
I'll buy it when the patch is out then, not a second earlier. I will not fall for mere promises.
Buying a software product with the requirement of perpetual functionality within its specifications (system requirements etc) is a principle.
My argument would continue, almost identical in philosophy, with this AC post: http://slashdot.org/comments.pl?sid=1667744&cid=32378396