perky
Private management does not necessarily mean stupid management. Most other UK regional airports have private companies in operational control but still have large LCC operations based there - BRS, LPL and EMA for starters.
I'm sure Jet2 are paying LBA a pittence at present and a new private operator would be an unknown quatity, but if it happens then that private operator would have to be amazingly dumb to bite the hand that provides about 45% of the total passengers at LBA this year. They would look to expand the sales outlets to harvest as much cash off the punters as possible before they get onboard. At present the layout of the commercial outlets is too haphazard, especially landside.