No it's not "obvious" at all, you only have to look at how well the DS has done when most people thought the PSP would do better to realise that it's not as straightforward as you think. Everyone will buy what suits them, and what they will enjoy the most. After the last generation I personally think everyone will have a clearer idea of what console they'd prefer and buy it, if they can't afford them all. I'm personally enjoying my 360 hell of a lot, and could probably go without buying either of the other consoles, although I will probably get a PS3 in a few years time to catch up on games like MGS4 and FFXIII.
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