It's getting harder and harder to see how they can turn it around. Crucially, PS3, PSP and 3DS had a lot of early pledged third party support going for them, so there was always light at the end of the tunnel. Vita has an utterly barren line-up, and the longer hardware fails to pick up, the less likely it's going to secure any future support. It's a vicious cycle. No sales, no games. No games, no sales, and so it keeps dropping lower, and lower...
Sony had better hope Soul Sacrifice the bee's knees.