But those people don't even have the option, so what do you mean they prefer to not walk/bike? How pleasant walking/biking will be is linked to density, reduced distance to amenities, and infrastructure, things almost no US cities have.

I live blocks from Costco in one of those cities but the option is either get on my bike and share the four-lane road with aggressive drivers in massive trucks/SUVs or use a tiny sidewalk that randomly stops and picks up again a block or two later.