However, Marcus, I think you are correct in some sense -- linguistic features are probably less important than cultural and political and economic factors. If China became a much more attractive destination for immigrants from around the world, and if Chinese culture became much more welcoming to immigrants from all ethnic backgrounds who want to fully assimilate and become Chinese citizens, then people would be "motivated" to learn Chinese, despite the linguistic barriers.


English pronunciation is very difficult too
"Difficult" in what context -- Making yourself understood? Or passing yourself off as a native speaker?