It just needs an exclusive game I'm interested in. I have a great PC and a PS4 (which was a gift). I wouldn't have got the PS4 either, right now, but a gift is a gift and I intended to get one eventually. The honest truth of the matter is that neither platform had any game I was terribly interested in right now that I couldn't get for the PC, and if I can get it for the PC I'm gonna get it for the PC.
I am glad that I have a PS4, since I am interested in the games that are coming to it - games like the next Uncharted game, for example. I don't know yet of any Xbox One exclusives that I am interested in - I'm not a fan of the Halo franchise, I don't like Forza either.... if they announced a new Gears game, I'd probably pick up an Xbox One.
A price cut would help, sure, but it's the lack of interesting exclusives that prevent me from buying it. If I got one... I couldn't think of anything I'd actually like to play on it, right now.