At least in chunks of the USA. AT&T is getting rid of them by the end of next year.
The USA had 2.6m payphones in 1998 and about 1m now.
Apparently, the story goes, AT&T (or someone else) commissioned McKinsey years ago to determine the demand for mobile phones.
The answer that came back was that the demand for mobile phones would be tiny, as folk were almost always within a few metres (ok – probably feet) or minutes of a pay phone.
I guess that study’s methodology could actually work these days – and even come up with the right answer.