no, RoW does not generally have AC. Most people in the "poor" countries don't have AC at home or at work and somehow carry on, in tropical, cyclone-prone, drought-prone, agricultural work heavy places. Their babies have to sleep, they have housework including cooking hot food, the kids don't have AC in schools, etc. I grew up in a place that gets occasional heat waves & remember AC was rare before 1990, even then in a rich country only some offices and some shops had it, and homes in Arizona... but homes in Arizona didn't have AC generally before about 1975. Yet people lived thru those summers anyway.
Its use can change architecture so that new buildings aren't habitable without AC.
My son installed a unit in his home, actually, and then leaves his doors & windows open, mostly doesn't have shades/blinds/curtains. I can only say he's paid well.
A nice thing about solar panels is they literally take some of the heat (converted from light) that hits your house, cooling the roof space itself.