Where I grew up, the vast majority of people I knew very rarely left the county they lived in - even though it was only a couple of hours to New York, Philadelphia, Baltimore, Washington DC. By the time I moved to Philadelphia, my social circle was much more likely to travel - but on the whole, the greater population of the city tends to stay within the city ("I have everything I need here, why would I bother with the hassle of going somewhere else?")

There, now we've both shared our experiences!

Hm, ok. We'll here in Europe things are a bit different. Most people travel, it is pretty easy to do so and even the 'poor' (students, people that only have bikes) move from city to city regularly.

I've got acquaintances from all over the planet though, and even there most people travel with some regularity to other cities. Holidays, family visits and so on, and then of course there is business travel which I would assume is one of the larger customer groups for Uber/taxis.

You must have only well-to-do acquaintances then... Or I'm misreading all the negatives in your statement.

No, it's a small country and relatives usually live in other towns.