China is a special case. As the government has effectively total control, even having 30% market share as Google doesn't mean it's a profitable venture, or that the government hasn't said that it will let it remain one - and there's really no way that it would've given that it's relatively easily replaceable critical infrastructure. Search engines aren't as hard as Googlers like to believe, it was substituted by Baidu succesfully. Think about it - which B2C non-Chinese software (not HW) services are still big in China? Anything besides OSes?