well Apple does have 51 billion dollars they have made from there huge iphone/pod network which gives them billions of profit a mouth. And remember while Sony is a big corperation, Apple only has to invest in enough shares to do an take over bid and 51 billion is certainly enough.
besides thos who are worrying or stuff, even if Apple was to buy Sony they wouldn't change the name of Sony to apple but merge there networks together. Sonys monster production network would start producing apple goods, sony's and apples uber talented R&D teams would work together and Sony will pull out of there failed phone venture and focus more on TV's, consumer electronics and video game consoles.
this is just a rumour but who knows, Apple might jump into the Electronics industry with an big player or an small one.
failed phone venture? Since when was sony ericsson a failure?