As someone who works for a commercial gym company I can provide some extra info on this...
After both lockdowns we have seen record numbers in new member sign ups, even with the added joining fee.
Most commercial gyms charge their PT's extortionate rent, which is where gyms make 30% of their money.
Some members have said that they'd pay triple what they pay now for our facilities, so even with a price hike, I doubt we'd loose enough to put even close to the wall.
That's the dream for me, I'd just hopefully be able to get it set up sooner. Equipment, in any state, is much more expensive in the UK than the prices my US friends have paid for their stuff.