I guess when I made that very open ended comment I have only one or two ideas in mind.

I don't know the costs associated with operating a corporate flight dept and a company like NetJets. In my lack of knowledge it seems like they get away with not having to pay their share even though they are providing the same service the airlines do, transporting passengers. What I don't realize is the numerous fees they already pay, landing fee's and various taxes.

I really shouldn't comment because I don't know enough to begin with, but my impression has always been the companies like netjets get away without having to pay their share, the share that the airlines cover, even though in reality they are providing the same exact service.