I don't think there's any danger of Google taking over the Chinese market... Perhaps Yandex is more at risk, but my impression is that Yandex dominates Russia

I don't think there's any danger of Google taking over the Chinese market... Perhaps Yandex is more at risk, but my impression is that Yandex dominates Russia much as Google leads the US. In Russia, Google is the underdog. Firefox's switch can only dampen competition in the Russian market, while users in markets without Yandex neither gain nor lose. The rest of the world may stand to benefit, if these national champions expand beyond their borders, and if they offer users a better choice than the competition. But that remains to be proven. In the meantime, Mozilla's switch will certainly have a measurable impact on the current competitive landscape.