This has to do with licensing and rights more than anything else.. not just "the internet"

Just because you have rights to something in one country, does not mean you have rights to that same thing in another country and so on.

Content providers are up against an amazing amount of bureaucracy, and only have limited resources to deal with these things.. especially considering we're talking about different laws and systems for virtually every country on the planet.

I'm certain Netflix would like to offer you as much content as they can, but they also have to respect existing law.