It will stop when Jetstar is rebranded Qantas or Jetstar get the staffing contract with QF. Then everything will go back to full service under the QF banner with some of the lowest paid pilots in the Western World. If it comes off they will be very hard to compete with I would imagine.
Jetstar is already morphing into QF with jetstar pax redeeming Freq Flyers, usage of Qantas lounges, allocated seating etc etc etc. Not a bad deal for a so called seperate entity. Will be very interesting to see what happens once all the mainline EBA's start coming around.