Would make sense for Apple
They want the iPhone to use the search engine the user wants to use.
...Of course, they could also give people the choice...
Baidu.com boss Robin Li has said the Chinese search giant will not buy troubled web biz Yahoo! Baidu hopes to grow its share of China's search market, as well as expand abroad, by building a bang-up HQ in Beijing. However, at the IT Leadership Summit in Shenzhen at the weekend Li denied a big money swoop for Yahoo! was on the …
Not really pointing the finger at Google. Baidu is large in China so it makes sense to use Baidu especially as the Great Firewall makes surfing non-China resident sites quite a bit slower. Just like Facebook and Twitter would default to the Chinese largest market share equivalents. It just makes sense in much the same that there is no point defaulting to Baidu in the UK or US.