The aforementioned DCI-P3 even have a higher gamma value of 2.6. Currently, almost all design compositions are done in the gamma compressed space, and the incorrect AA  and blending will be even worse on those devices.
Another thing is that most of displays are not even calibrated properly. Not even speaking about technical characteristics of the screens.
Text blending in linear space perceived as “too thin” and inconsistent because font weights are choosen for the sRGB .
With light fonts at small sizes, sRGB blending also has apparent weight changes with the background .
But with bold fonts, the weight is consistent only shapes are perfectly smooth with the linear blending .
And with more colors, the sRGB blending is a failure .
Unless they're just being mapped directly, which would probably make everything automatically look much more vivid... and that would help sell those displays too.