Welcome to the forum
I know I'm from Uncommon Knowledge, but I couldn't resist telling you about some of my experiences from doing the diploma course myself this year, plug plug . . .
It's just that you mentioned how being a therapist could be quite solitary and it does seem like it could get that way.
On the diploma, we were heavily encouraged from the outset to get into practise groups, to discuss and practise hypnosis on a regular basis.
I can't tell you how helpful that has been, and there's a clear difference in ability between those who have done that and those who haven't.
But to get back to the point, we are carrying on our weekly group meetings, to discuss clients that we see and therapy in general. I can't imagine having done the course without that support and chance to ask questions and opinions and to trry out differnet techniques, etc.
So that's one way of easing any feelings of solitude, although I know that it wouldn't fully compensate for say, a team of work colleagues. However, like you've mentioned, you can always set up in practise with others, either as a company or a co-operative or whatever you like really.
But just so that you know, there are many like minded people who do our course, and I'm sure you'd find that with other training courses too.
Hope this helps