Even with the Apple browser, it can't hurt to complement your .com by owning the .mobi equivalent name. However I think that .mobi will always be a supporting name to its big brother .com because .mobi sites are bound to lose some traffic to the .com.
I think dot mobi is best used like a folder to neatly deal with mobile traffic of the matching .com. That appears to be the case at sites like foxnews where they obviously own both the dot mobi and the dot com. Therefore I don't see how a dot mobi site can survive without its matching dot com.
At the end of the day a dot com can always produce both normal and mobile pages but a dot mobi will always be limited to being associated with mobile content only. Therefore I see .mobi as a fun add-on to the existing .com brand, a way to neatly sort traffic and around 5% of the value of the matching .com.
I think dot mobi is best used like a folder to neatly deal with mobile traffic of the matching .com. That appears to be the case at sites like foxnews where they obviously own both the dot mobi and the dot com. Therefore I don't see how a dot mobi site can survive without its matching dot com.
At the end of the day a dot com can always produce both normal and mobile pages but a dot mobi will always be limited to being associated with mobile content only. Therefore I see .mobi as a fun add-on to the existing .com brand, a way to neatly sort traffic and around 5% of the value of the matching .com.