I haven't noticed a recession in the UK making punting conditions better. In fact it usually means I'm a bit short of cash myself....
Recessions in other countries can help - like the Brazilians that are working here seem to have come mostly from Spain where the market for hookers has collapsed due to the economic problems.
I think it's a general rule anyway that the more women that are really forced into working due to financial problems the more of a minefield it is to find the ones that give a good service.