That's actually rather difficult to give one answer to, even if narrowed to one country/culture as the target audience.

For North America: central heat/air is not a thing here outside of commercial applications. A handful of private individuals do it, but it ends up costing a ton both directly (the unit/maintenance) and indirectly (more materials, ductwork, insulation, etc. that are less common and more expensive here). We just had building laws revised this year to require slightly higher building codes for energy efficiency and insulation, but it's still well below the standard of other places. It's somewhat a cost issue (Japanese houses depreciate to nothing after 20 years in most cases and land value only goes up in a handful of areas, so there's additional pressure not to care a ton), and also a reaction to "sick home syndrome" that came from bad plastics/materials offgassing things like formaldehyde in the '80s in more tightly-closed homes. Here, homes that breathe well are still considered better.

It’s old American military officer housing, rented out as low income housing for several decades, then after it accidentally lasted long enough to appeal to locals, it was refurbed into a kitschy/artsy commercial area to indulge in Americana through a Japanese lens.

It looks like America, so ehhhh

Not a single mcmansion in sight! Not even enough yard to have a ride on mower??? Horrors!

https://www.japan-experience.com/all-about-japan/saitama/attractions-excursions/johnson-town

It was an old US airbase town

So like a normal suburb from before 1920....

there is no money to invest in that infrastructure when almost the whole population is pensioners

The national government has plenty of money. And investing in these communities would generate permanent employment, such that more young people would live there.

But the politics of the county resists this kind of investment, because it isn't immediately profitable.

Shit, pay me and I'll emigrate to Japan in a heartbeat.