Why has Jetstar not got better in 13 years?

Jetstar have been attempting to run an airline since 2004 but the number and seriousness of the complaints just seem to be increasing. In addition the standard is slipping and the rip offs for more revenue go on and on. Jetstar make price gouging an art form. One day a trip is $150 the next the same trip is $400+. Extra for a decent seat,extra to sit with your family,extra for a glass of water,extra for a cushion ,extra for a snack, extra ,extra ,and more extras. Meanwhile the casual attitude of the staff and off hand attitude towards any comfort or refund service continues. They don't want you to have a decent trip ,they just want you to be treated like cattle. And how much did the boss earn last year??? $25,000,000! yes that's right $25million for running one of the worlds worst airlines in the world. I call that a huge rip off