OK. The subtext and humor is all very French, but...
We were building Passive Solar homes (and commercial/religious/government buildings) in Wyoming back in the early 80s...
An entire subdivision in Lander even.
But not enough people cared/wanted to buy them to make it viable.
I mean, who wants a house that will heat itself to 54deg with no grid/fossil fuel input when it's well below zero outside. AND is designed to ventilate itself to 10 degrees below external ambient in the summer without fans. Madness!