An interesting market since all companies are now allowed to serve domestic routes. Heard that Onurair put 12 planes on domestic routes with already 50+ departures ex IST a day. Other companies have ordered airplanes as well (that would explain all the contracts / FI). Airline tickets are as cheap as bus tickets by now (50$ one way).
THY is not happy but has to adjust their fares as well not to loose ground. Guess it's a pilots market over there...
www.turkishdailynews.com published an interesting article, can't remember the date though.