It will be time to get 'worried' when we see Chinese approaching the top of a chart which adds up not just users' first langauges, but additional languages also

It will be time to get 'worried' when we see Chinese approaching the top of a chart which adds up not just users' first langauges, but additional languages also. I would imagine the common language measure is far more significant than first language alone. That's what's going to drive language choice for content, and content is what I'm interested in as a user. I can see a separate, more insular net of Chinese content developing, given the mass of Chinese speakers. I just don't see it supplanting the general, English net.