The US construction industry will by necessity have to keep it's standard dimensions although the nomenclature could change. That change will have to be forced into place at near-gunpoint though as most of us know nothing else
I was with a company building a factory back in 1982. All the dimensions were Imperial except for the machinery mounting pads and bolts which were metric because the machines were from Europe. Everyone dreaded the upcoming chore of converting the dimensions from Metric to decimal English then to fractional equivalents. An error would cost thousands of dollars and involve breaking up and re-pouring a whole lot of steel-reinforced concrete
Nobody wanted to be the one responsible for making the conversion calculations
I became the 'hero' when I showed up with a Metric/English tape rule which back then were nearly impossible to find here. The usual supply points could order them in Engineer grade for like $80; nothing else could be had. We had the Field Engineer verify the accuracy of mine and it was used to lay out all the machinery points perfectly. I found that one at the local independent five-and-dime entirely by luck and chance
It will not be easy for us to go Metric and it will never get easier so we might as well do it now and get it over with. It is a far superior system, easier to learn and to use. Whoever forces this to happen will be widely hated today but hailed as a hero 50 years from now. Such is the plight of being a genius in a rather stupid world
Phil