Well, Sharp has a very nice patent portfolio, so that could be valuable to Apple. Sharp used to manufacture very nice phones. On a side note, for what I saw in Japan Apple is seen in the same light that many Japanese corporations, so that wouldn't be really a problem. After all, Sony had a stupid moron of American origin* for too much time at its helm and that almost destroyed their company, too. But, I think that what is causing now more troubles to Japanese corporations are the high prices on energy since they still have most of their nuclear energy power stations stopped and the very strong yen. A strong currency with high energy prices is a combination that would cripple any corporation that depends on exports.
*not to be called an attack on Americans. Stupidity, sadly, is shared among people of all ages and nations.