It kinda is a big feature though. I'd imagine people who need a rideshare service are over-represented in people who travel a lot for either business or pleasur

It kinda is a big feature though. I'd imagine people who need a rideshare service are over-represented in people who travel a lot for either business or pleasure, and likely do so to multiple random cities. I remember traveling to a city in Canada 4-5 years ago when they didn't have Uber or Lyft, and there was a local app that was vexing to try to use if you didn't already live there, and assumed you had a local address. There were a lot of places I just didn't end up going to because I couldn't work out the app, and couldn't find a normal taxi on the street that didn't require cash that I didn't have. For a lot of people, the times you're calling a cab are a stressful experience already - you're in a new place, maybe with a new language, often under time pressure to get somewhere. There's definite advantage to using a familiar app in that use case.