[nine_k]

I don't see why getting certain videos whitelisted and proxied through an official site or GFW directly would not be viable.

Same for twitter: send your tweets via an approved gateway, get them reviewed an pushed to Twitter, get pre-censored retweets as they appear and get approved. Make the international voice of the PRC researchers official-only, Soviet-style.

With corporations, it's harder. But for each "we don't trust your servers" from a Western corp side there could be a symmetric "we don't trust your servers" from Chinese side. The resolution depends on who needs the other side more; I bet that in most cases it would be Western corporations giving in.