But seeing as Sony has little cash and effectively can't borrow how would they do that? Sell a division to finance PS4?
As its one of their only brands which is worth anything today IMHO it could be worth while, but I can't see it.
Better to sell a capable but not far of profitable console and concentrate on supporting the Devs. They can't win a power race with MS but there is more than one way to skin a cat.
Sony's $21 billion cash reserves says hi.