Trade barrier? Since when services offered through the web are paying taxes in the places where they are rendering their services. If anything, expect a lot more governments to wisen up, like the US did with Amazon and taxes, and create these barriers to have people actually play by local rules. That I don't agree with Chinese rules is one thing but it is their country.

But let's be perfectly clear that the Chinese did this out of censorship and the trade part happened to be a side-effect.