If Sony purely profits off of PS4 and turns around their electronics division they'll be worth more than Nintendo very quickly. Microsoft such a high market cap because they have control of the PC market because outside of Apple computers they are the OS for most running PC's. If you barely have competition your profits will either stay still or gradually increase. Every industry Sony is involved in has healthy competition. Nintendo just has to keep profiting off of hardware and games which means cheaper hardware and increased cheaper but well made games which rakes in the profits.







