The website and app still isn't offered in Canada, but changing a business model for American customers means changing the business model for Canadians - whenever Canadian consumers will have access to it.
Companies hopefully learned that there is a real threat of becoming dated and obscure when it comes to technology and services. Netflix buried Blockbuster. There is a real threat of piracy undermining the development of some really great programs on HBO. At the same time HBO has to be flexible with its customers, and realizing that people just aren't purchasing traditional cable services that limit the customers ability to watch media on various devices will continue to push people away.
Check out the blog for further information;
http://www.cultofmac.com/220872/hbo-ceo-says-access-to-hbo-go-app-may-expand-to-cord-cutters/