Sony can be described as a conglomerate with too many anchors holding the ship back, and not enough engines driving the company forward.
They have been dropping a lot of their loss leading divisions like their Vaio PC division, their Ericsson mobile division, their HDTV division, etc. and dumping non beneficial assets/liabilities, but it's very hard for a company of Sony's size to adjust fire rapidly as we've seen since 2008.
It seems unlikely that Sony can rebuild its image off the back of essentially one device, but it appears that they have been more or less been doing just that with the PS4.
Naturally, Sony has always had its media/entertainment divisions as well as their lesser known financial services, but the main success story has been the PS4, which Sony has been wise to build off of with all the related services tied to the console.
It's still too early to say really, but it is pretty safe to say that SCE will continue to do well moving forward, whether as a separate division (I don't see this happening as the Playstation brand is a halo brand for Sony) or as the most visible, profitable division driving growth (or reducing overall losses) for Sony.







