That's a little reductive. I grew up in San Diego and went to school in LA and had the same experience with taxis - never took them. But now I use ubers in those cities whenever I'm there.

The US has tons of cities like this that I imagine would have issues with taxis - all parts of the bay area peninsula / east bay, cities in Texas, Denver, etc. Most cities are not like the NYC/Boston and even in places in Chicago, unless you lived downtown likely didn't see taxis driving around.