Physical footprint changes like this are sloooooow. For example, “according to the latest data from the 2021 American Community Survey (ACS), the median age of

Physical footprint changes like this are sloooooow. For example, “according to the latest data from the 2021 American Community Survey (ACS), the median age of owner-occupied homes was 40 years.” Add that to every other problem you mentioned, and several more in comments, and even in places like Arizona where a shaded parking spot is valuable than typical you just don’t see a ton of installations.