Modern dSLR cameras easily out do the sRGB colour space. They also capture more dynamic range than visible on sRGB 8 bit displays (my Dell u2415 included), and this only gets worse when we take bracketed images, exposure for darks, mids and highlights and combine in an HDR image.
All too often this HDR image is tone mapped and rendered out as an 8 bit sRGB jpeg for web use and display. Folks still call it HDR, but it's not, it's tone mapped.
High Dynamic Range displays would help to get closer to displaying all of the graduations, and extreme dark and lights in such an image. Unfortunately, as it's not common tech for most folks, one is still best rendering out as 8 bit sRGB jpeg for other viewers.
...and here we are in the same crux as many a music mastering engineer. What the heck is the end user going to be looking at / listening to? It's all well and great mastering for a lovely full range system, calibrated and in a treated room, but what does the fellow with their cheapy earbuds do? I suppose the loudness war is a bit like the dumbing down of images for the masses with uncalibrated screens with poor (or even poorer) colour gamuts, gamma and contrast ratios.
But yes, I can't agree more. Calibrate your gear. If you are running your own prints and can calibrate across the board, that is the best way. Screen to paper accuracy. You know what you are going to get (within reason as backlight vs. reflected light off paper are two different things!).
You can't help the rest of the world that isn't calibrated.
I wouldn't mind trying out a decent quality HDR TV, but it looks like we'll be HDRPro10 at best, as we've only the space for a 32" TV. 36" units are made, so have to go smaller rather than larger.