If the PS3 released at the same price point as the Wii, I would have proberbly purchased a PS3, given its technical capabilities and because at that price, it would have ensured continual Sony dominance into the current generation.
However, I would have purchased a Wii eventually, because I find the new direction of Nintendo appealling. I feel that the industry had become somewhat stagnant during the last generation, and Nintendo's emphasis on a broader demographic and its implementation of innovative new interfaces was very neccesary, and you can only applaud them for this.
Of course this is just a hypothetical question, and quite wishful thinking really. That kind of price for a Blu Ray player alone is a steal.