Which mount will get cancelled first? (poll)

I hate to be a "Debbie Downer" but with so many different and incompatible camera systems and a market nowhere near as hot and growing as smartphones or tablets, it is not an unreasonable question to ask - can the market sustain all these different camera systems? If no, which one do you think will get cancelled first or just fade away because of no new developments? Only the general-interest systems are included below. The medium format world is a niche within a niche, so it is not included in this poll. For more elaborate answers, please feel free to use the comments below.