I wonder whether this was a commercial, cultural or geo-political decision. Does the CCP want to neutralise reactionary activity in Eve Online by controlling the server? Is there some political flavour to any of these alliances?
Some Chinese play on the world server but it's actually more or less illegal (wrt Chinese law) for them to do so...
Some years ago there was also an hilarious "invasion" of the Chinese servers by euro/US people, with patching the Chinese client to put it in English and using some stolen Chinese citizens national ID numbers in order to be able to subscribe... See http://failheap-challenge.com/showthread.php?1733-Serenity-C...