You're acting like politics has no place on government built and regulated roads.

All the decisions are politics by definition.

We do have political power; if you’re in the US, you had the opportunity to exercise it in the last week. Your local elected officials make the plans for roads and bike lanes and zoning and parking lots and variances; and they are usually quite responsive to the voting public.

The omni-presence of cars in US is from "command and control" through laws and the legal system, and in particular the planning system. Our planning system mandates all sorts of things about the built infrastructure that a purely market based society would not choose on its own. This sort of command and control mandates the exact number of parking spaces required for a shoe store versus a bowling alley, versus any other type of land use.

In nearly all of the US it is literally illegal to build out infrastructure with out prioritizing cars and car infrastructure over everything.

This was a political choice that we made, as we do live in a representative democracy.

You are free to drive any car you want on private roads.