It took major redevelopment for many US cities to become car-centric, so I am not seeing why we could not do another redevelopment to create pedestrian-friendly cities.
We have 2 local cities that made themselves bike friendly. Property values are going up in that area.
However, the people living there were already 10%ers.
Its cool to see lots of bike lanes and walkers, but they also managed to price the people that cant afford cars out.
However, it's also likely they will want this nice life in more than just their area and will push for that over time.
Americans tend to live in detached single family homes.
Americans tend to want space between themselves and their neighbors.
Americans do not see their cars as liabilities.
Most people don't live in SF/NYC and/or don't read StrongTowns
Replacing American suburbia would cost $100 Trillion dollars. More suburbia is being created every day, far outpacing investment in "New Urbanism".
In America, when your city/suburb becomes blighted, you can move.