Wide monitor is wide.
This may be the future of computer monitors. I prefer a dual monitor setup to cover my field of view with two full windows, but this 21:9 monitor may obsolesce the double monitor arrangement. 16:10 monitors have become the norm these days, but I've always felt that it was an awkward compromise between the cinema-friendly 16:9 and the productivity-friendly 4:3 aspect ratios. On the other hand, 21:9 aspect ratio is like having two 4:3 monitors, so there is no compromise for productivity, and it won't display any black bars for the latest movies formatted in this ratio.
In a few years, everyone will be using these 21:9 monitors.