Given that Riot is owned by Tencent, they could just have the Chinese government block the oversea companies and be successful in China if nothing else.
Welpp, people have forgotten the "china" thing so now some people are losing their shit for this. It could work well, but I'm cautiosly optimistic by it. What I love about it is that it could be a massive wake up call for Valve and Blizz in their respective genre.