At least in my country only ~40% of population lives in single family houses. The rest lives in apartaments with no access to the solutions you mentioned. Also

At least in my country only ~40% of population lives in single family houses. The rest lives in apartaments with no access to the solutions you mentioned. Also, if you have a single family house, you can just put up solar on the roof, and that will cover AC energy expenditure, all your other energy needs from spring until fall and then have some to give back to the grid.