It has nothing to do with Hulu not wanting to figure out an advertising strategy for countries outside of the United States. Hulu is a business, and if there is money to be made then they will do their best to make it.
The issue is that the networks who produce these shows enter into contracts with the networks who air those shows in foreign countries. So for example, here in Canada, CTV airs a lot of american network television shows, and in buying those shows they stipulate that they have the exclusive rights to make money off of those shows in Canada. So unless CTV and Global and the other Canadian stations enter into a partnership with Hulu, or come up with something similar themselves, then we Canadians are SOL.
...Fortunately its a minority and the senate is still there to protect the interests of the people of Canada...
Only for a little while longer though, come January the Conservatives will no longer have a minority in the Senate.