My therapist is in private practice, semi-retired. I have cancelled very few sessions (maybe three out of 125, when my daughter was sick or something), though I've threatened to cancel quite a few, haha, as we have ruptures.

When I threatened to cancel early on, she kindly told me she would keep my slot open. I *always* insisted on offering her payment for missed sessions, but she has told me she would occupy herself otherwise and no charge was necessary. She has no overhead, working form home online, so that probably makes it easier for her to be flexible. However, I always reschedule as soon as possible in the event of a very rare last minute cancellation so... she still receives the income.