A price drop isn't going to make people go buy something they don't want, It can only motivate the ones who already want it to get it now rather than later. And that exactly what the price drop achieved for the XB1 during the holidays.
It might work differently when it comes to products that mainly target women cause they have a knack for going out and buying things they didn't really want just because they were on sale, but video game consoles are more dependent on the male demographic.