The thing I found about many of them is their business model isn't based purely on sessions.
On their websites they sell media, a lot of it. There are many out there who don't dare to get themselves kicked in the balls (or shins) or get trampled upon but will pay to watch it being done to others. And some may do both. (As well as the various other kinds of activity, of course).
I do not recall paying deposits to Mistress Cameo, I do recall paying them regularly to Jessica Wood and Amy Hunter. Neither of those will run off with your deposit and they both still work (when lockdown allows). Jessica Wood did work from her own place, Amy Hunter did not, and needed the money to hire the premises. With me, it was just done in someone's house, but I guess with others she hired proper dungeons.
Regarding MissLondonDomme, she obviously does a lot of business via webcam / IM session, and hasn't done many meetup sessions even in the year or two before restrictions. She has limited online videos. I think A/W doesn't allow you to post links to your own site.