As I've said in other posts, I haven't punted since start of first lockdown and hope to start again a few weeks after second jab which is coming up. However my availability was and will be short notice evening appointments which were getting increasingly difficult to get. I had to learn the lesson not to book someone not on my radar just because she was available. I may be looking back with rose tinted specs but I seem to remember five or six years ago being able to look at about 7pm and find between Diamonds and Amour upwards of a dozen desirable young ladies working that night with others available elsewhere. A phone call would always reveal a selection who could accommodate me and the booking would be made for the same evening. Those who were working evenings before lockdowns tended to get booked up by people in a position to book further in advance than I. We'll see how I fare in a few weeks' time.
I have the same recollection. I used to ring Diamonds for short notice evening bookings with a mental list of 2 or 3 girls I fancied and allow chance to take its course as to who was free first.
There may still be as many escorts working, but they are spread around different agencies and other sites these days, including some who are "sugar babies". There's no longer one dominant " go to" option.
I suspect there is also less pressure/encouragement from agencies to have girls working over a greater proportion of the day.