[hammock]

Taxis, available with e.g. a simple phone call, have existed since before telephones and cars really, and they still exist now even as ride-sharing has taken over. They will exist as Cruise rises.

[lmm]

They exist because they're a viable business because there is enough approximately consistent demand. That's not guaranteed to continue.

[oefrha]

There might be taxis, but not enough for everyone who wants to catch one. It’s already difficult enough on rainy days.