Actually, lots of people wanted an Xbox One at launch. The XB1's sales curve has been really weird.
It had pretty great month-1 sales. It would have had the fastest month-1 sales of any console in history - if it hadn't launched alongside the PS4 (which broke the previous records by an even larger margin). But some time shortly after Christmas, the sales basically flatlined. First MS switched to talking about "units shipped" rather than "units sold" and then it stopped issuing new numbers at all.
By piecing together bits and pieces of retailer and regional sales data, it's possible to get a broad understanding of where the console stands now. Having originally been tipped to pass the Wii-U and take second-place in current gen sales somewhere around April, it appears that it probably only did so some time in September (and indeed, it certainly hasn't officially been announced yet, so there's at least an outside chance it's still in third). It's had several significant sales blips, driven first by the price cut when Kinnect was removed and then again by Destiny, but background sales outside of these blips have been generally very slow throughout 2014.
It's actually pretty similar to (though marginally better than) the sales profile for the Wii-U. That console actually sold well during its first 6 weeks or so on sale, before flatlining. Each first-party Nintendo game since then has caused a small 1-week spike in sales, but after Mario Kart, diminishing returns appear to be kicking in.
In regional terms, The Xbox One appears to be in a fairly solid second place in the US (behind the PS4), a distant second place in Europe (again behind the PS4) and third place in Japan. Indeed, the PS4 is also doing badly in Japan - home console gaming is dying in that market and even the Wii-U (which holds first place there) is doing badly compared to the last gen consoles.
The Xbox One does still have a few big irons in the fire and isn't quite in a Wii-U style Last Chance Saloon yet (if Smash Bros and Bayonetta 2 don't turn around the Wii-U's fortunes this Christmas, the console essentially can be considered dead). Forza Horizon 2 is a fairly big draw and Halo 5 will be a bigger one. But MS have certainly gone backwards since the days of the 360, when they dominated the US and managed a reasonable draw with Sony in Europe. In marketshare terms, the Xbox One looks a lot more like the original Xbox.
Though in general terms, this has been an extremely boring year for console games anyway. People get excited about new console releases, forgetting that they tend to be followed by 12 months during which there isn't much worth playing for them. It's always the later years of the cycle that are more fun in terms of game releases.