I'm actually in agreement with you. However Sony has no options left if Microsoft is basically allowed to buy the industry up to crush PlayStation.
Well, there is one option, but the Japanese government would never allow it. If Sony would begin to shop themselves around for acquisition, they could survive as a part of a much larger company. A company like Apple, which has previously tried and failed to break into gaming, would probably be very interested in acquiring Sony for instance. However, as I said, Japan's government would never allow such an acquisition, at least not now while Sony is still apparently healthy.
As an independent company, I rate Sony's likelihood of survival around 50/50. It is more likely that they will be slowly starved of content by Microsoft as other Western studios and publishers are acquired one by one, and only on the brink of bankruptcy will they be acquired for pennies on the dollar by someone like Apple. By then it will already be too late for the gaming industry, Microsoft will control it as thoroughly as they control computer operating systems with Windows today.