So like 40 years sgo, in the US, strollers were just these cheap little things, collapsible plastic frames with some heavy fabric to sit the kid in. The new ones are all super big and fancy and have whatever safety features. I would have guessed in areas where the newer kind are not available, they would at least use the older style of stroller. (As they would be less expensive, more portable, easier to produce, less footprint on the street/sidewalk.)