Interesting question. I've worked as a specialist b&w printer since the 80s and print for some well known photographers, (at least in the UK) but also have done some interesting one off projects for big US clients, so assume these photographers are happy getting their exhibition prints and editions printed by someone else. It's a privilege working with such photographers and I really a get a chance to study their work. Sadly it's not such profitable work to do these days, (labs used to make their money on film processing before digital), but couldn't imagine doing anything else.
However.........
I also work on my own photographic projects and could not think about getting anyone else to print my own work, so what sort of hypocrite does that make me?