Well it's like anything else in that trade, some people like live, some would rather pre-order custom made content. Hypnosis is a big rabbit hole I'd rather not get too far into and we're already on the fringe of HN's overton window. One example might be trying to implant suggestions to give them more money.

Maybe the best analogy would be that a good hypnotist is a almost like a FAANG in living human form; They're just trying to convince you to do/think something. And, well, there's some things you just don't want to be sold. :)