So despite the fact that I was able to sign up for the feeds via VPN, I went ahead and sent in a formal complaint to CBS over their cockblocking. I channeled my inner jokers housewife and went all out.
Their response:
Thank you for being a loyal fan of CBS’s Big Brother. Unfortunately, due to contractual limitations, our Canadian friends currently do not have the ability to subscribe to the Big Brother Live Feed. We greatly appreciate your feedback and are actively escalating your concerns with the hopes that a change can be made. While there can be no assurance of this, we want to ensure you that your voice has been heard. Thank you for understanding and your continued patronage of Big Brother.
The CBS.com support team.
You're gonna have to do better than that, CBS.