If it is not possible to create a color space describing how colors are displayed on a monitor by using a colorimeter and profiling software, I must have been with much higher expectation about what color management can do. I wonder if this is some sort of technical limitation or a matter of decision (user demand).
I guess they have to make 2 kinds of monitor profiles for a monitor, one for calibration and use for the current computer system and one that can be used on any other computer systems.
Didn't the diagram I posted above explain the two parts of a display profile?
There's no reason to use another display profile to show what images are suppose to look like on another calibrated/profiled display. The image will have the embedded profile/color space to make the image match on both displays. That's color management.
If your client isn't viewing tagged images on a calibrated/profiled display then the image isn't going to match anyway no matter what you do. It's that simple.
Even if you were to assign another display's profile containing the vcgt curves to the image as a way to soft proof, those curves would make the image look horrible because they are correcting for the anomalies of the other display that aren't present on the current monitor being soft proofed on. No two displays are exactly alike with regards to their calibration/vcgt correction curves.