Nippon Telegraph & Tel (basically the Japanese government)
Already an internet/tv/Mobile provider, so Sony would bring an interesting array of new products that would integrate nicely.
Or Mitsubishi group. They have a huge insurance arm (largest revenue pice of Sony) and electronics (would benefit from Sony patents definitely) since it's really just a conglomerate of smaller.companies, it could easily let playstation/music/Columbia pictures stay the same, just under the Mitsubishi brand instead of Sony.









