
I doubt we can get there with only technological advances, but building more efficient infrastructure (also in public transportation) isn’t a bad thing except for cost and emissions of construction.
The conversation where to cut the lavish lifestyles that hurt the environment most will be a long and difficult one, but I believe there are many options and people don’t have to adopt every single one of them to make an impact. People are already changing their diets, sell their cars, go on vacation to nearer places and find creative ways to use the space in their houses.
And specifically for housing: building denser in urban areas is in the interest of the market that can capitalize on it.
I’m still optimistic because with the exception of city governments a majority of our politicians are right wing or conservatives right of center who are all very friendly to businesses. And look how far we’ve come already despite it all.

That’s the problem with our rightwing politicians and government that finally needs to be balanced towards professionals who want to solve actual problems.
Unfortunately we still lie to ourselves about how our farmers do their best for the environment.