The O.P has made a valid point and it is up to US the punters to pay their over the top rates or do the simple thing and avoid WGs who think they are worth high stakes.
I have known a few over the years, who have saved and invested their earnings buying gold, multiple Rolex watches, apartments to let out here and overseas.
A few have diversified in buying vineyard, organic farm, restaurants,
and even multiple massage parlours, here in UK and abroad.
Meanwhile, US, Joe punter has f.all to show for our years spending to be entertained.
I think £50/half hour and £120/Hour should be judged reasonable for overall overheads and expenses, keeping room tidy and changing bedsheets frequently for hygiene purposes.