At the end of the day, if escorts start pricing themselves out of the market, then ultimately there will be far less choice. What remains may or may not be any good regardless of the cost.
At present, quite a few are still doing well without providing any real service. As long as men will spend £££ on a mediocre time, then they've little to worry about. Easier to put in half hearted effort than to go all out to try and please a limited number of men who aren't guaranteed to provide you with a steady and reliable income stream. Probably less tiring lying there, fake moaning and getting the man to cum in 5 mins.
As a few of us have said, it's value more than price. I don't want to pay £180 for a woman to lie there going "ooh baby, cum for me" 5 seconds after touching her when it's bad enough paying £120 for the same thing.
(I'm sure a lot of men happily paid a premium £40+ to see Man Utd. the other day. "Great team" with a reputation, history etc. but came out disappointed after they lost a record 7-0)
Quite a few well known and well reviewed women have vanished, or are infrequently popping up these days. Have they all found the magic cash cow, or now have super paying jobs?
Inflating the egos of 18st+ munters on say dating sites doesn't help. When you're getting rejected by someone of that description even though you're fairly decent looking, physically ok and have a good job etc., there's something up.
Sometimes men just cannot get in there no matter what they're offering.
SA has in some ways been a victim of it's own success. Lowball offers have, up to a point, reduced the number of non-working girl types on there.
Back when it started, £250-£350 amounts weren't seen as too bad, and girls willingly provided a genuine experience and were happy to spend hours to overnights with you.
When the consistent £150 offers started, yes a few took them, but now most who accept anything near that are AW types who may or may not earn that elsewhere (and may use it as a second avenue for advertising services).
A lot of the prettier, younger woman, know fine they can use social media to show off their bodies and therefore attract men. Far easier to gain 1000s of followers by teasing, a % of which will pay ££ to see more, than to go through the effort of meeting someone for £150-£300 (for a few hours / evening) and finding riches aren't coming their way.
Sure there are multiple factors why and why not things are happening. Society changes.