I think their current market focus is to diversify some. Much like sony has, although not to such an extreme. When one market is taking a hit you can stay afloat on others. I do believe that they will continue to be a computer company.
Sony is a good example of a japanese business model. If you look, many eastern companies have taken this approach. Yamaha for example. They create Consumer electronics, professional electronics, non electrical instruments (saxaphone, guitar... etc) as well as being extremely reputable in the ATV markets. Honda has done the same, mostly within wheeled vehicles and industrial machines.
Apple started out as a computer company. Their focus of the future of computing is integrating their product with other facets of our life. I believe this is why all the iApps and the hardware is comming about. To push the digital hub lifestyle to us a little sooner.
All in all, I don't think they would make it trying to spread as far as sony has over the years, they would definately go under as a software only company, and I don't see them going out of business THAT soon... maybe a little later. I guess my vote would have to be for keeping things the way they are now.