M-CARDS

Where ya gonna get it? Even if you found one, I doubt Cox would provision it. They want their monthly stipend, ya know?

Customer owned cable cards are not provisionable at this time.

M-CARDS are readily available on the internet.

I would say that most of those are probably misappropriated.  Equipment provided by cable carriers is not available for retail sale however can be readily found on auction and other Internet sites. 

Card and/or STB ownership by the customer is commonplace in Canada.

This is true although probably with the stipulation that they are for sale and use in Canada.  This would be another way to misappropriate them so to speak which I don't mean to say is illegal, just improper.