Making money from charging for frills is a legitimate part of the low-cost model, it happens in other industries as well. However, Jetstar are losing focus if they start offering business services - this will ultimately hurt their cost base not to mention the damage it will (continue to) cause their sister business.
I personally dislike Jetstar and their attempt to minimise costs, but their (not the QF group's) business strategy to date has been mostly good. However, recent attempts to take on QF's business market and disengaging staff will result in tears! Focus on your core business and work on wining the support of staff! Not only will your cost base be minimised but productivity will be higher. Don't try to follow Virgin's strategy - your lower cost base is your advantage, you don't have to swing that way.
Pitty management lack any real human-skills and their goals (and bonuses) are based on short-term financial performance.