few reasons

Here are a few points from my own experience and things I have heard from others. LA is very "spread out", and it's far more difficult to move around given the traffic problem. Where in NYC most travelers can stay in one spot and the public transportation can bridge the distance gap. NYC also has massive amount of tourism/ event goers, so the client pool is always refreshed even for local girls. I think the west coast porn industry and Nevada eats quite a bit into the client pool as well. Also personally LA has a way more east Asian/ southeast Asian girls which compete against myself, this may be a bigger problem for genetic providers from what I have heard. NYC is also the most walk-able city in the country according to data, that is a big plus for travelers and girls who don't like to drive alike.

Look at the rates girls charge in New York. They're sky high. Why work in LA for less money?  Even new and unreviewed girls are charging $400 in New York. New York is a seller's market.

that it is Apples vs. Oranges. Both cities are very trans friendly. Both cities have their own energy and beauty -  but they are so different.  It could just be personal preference - a girl gets tired and needs a change of scenery or maybe her quality of life is better on the East Coast than the West Coast. Brandy has been in SFV a long time.... maybe too long and maybe she gets more action in Manhattan. And maybe this cougar loves the seasons so she decides to settle into the concrete jungle. Can't say I blame her. NYC can't be beat.

My fav no longer works in LA and she lives here....been seeing her since '05, but no more.....

didnt she have a farewell tour then retire about 3 or 4 years ago?