I remember I extensively used Berlin public transport nearly 30y ago and was annoyed how you couldn't use it with a stroller because of the lack of "accessibility"

I then realized "accessibility" translates straight to: mobility with little children. which affects many many additional people, but it's rarely in the public discourse anywhere.

in Paris in 2019 I then saw parents with tiny light-weight sit-on micro scooters, as a creative work-around to the parental public mobility challenge.

but 2055? ooof.