Because they are "new" and "fresh" and not every client reads these forum and is aware. Back in the days of Frontiers magazine here in SoCal the "fresh" new ads would get hit on quickly and hard. At any rate.
I've posted this before but we in the forum are a teeny-tiny percentage of clients. So we are savvy about pricing, fake pics, etc. But most of these escorts are getting called/hired at any $ rate as we discuss them, lol. Yes, some will find that the market dictates their rates down/up. And some will continue to (never read these forum) and bank ca$h.
Edit: p.s. JayRiley doesn't interest me