Sorry , I don't have the appropriate links to the whole articles, (Google?) but Global has had access to Fox for over 4 years. CRTC approved it. Perhaps a simple , no market is the answer.
Which grey market ? The one where a Canadian subscribes and uses a US address ? Here's a weird thought. Could it be that it's the original US broadcaster that requires a US address and refuses to broadcast into other countries ? After all , how do you sell your signal to a Canadian broadcaster if you supply all the market . And there isn't anyone in Canada who will buy advertising from you . But they will buy from a broadcaster , in Canada , to whom your sell your signal . It's about money.
Or the grey market where the dish pirates the signal using a counterfeit card. And only the counterfeiters make the money.