The lease agreements at airports and in shopping malls are insanely complicated things.

All kinds of conditions about required opening hours (which kind of makes sense), deals about how many other stores in the same sector - or even a specific list of other brands - can/cannot/must be within a certain radius, depending on whether the aim is to exclude direct competition or create a mini hub for food, fashion, whatever.

And sometimes part of the rent is a percentage of takings, so they have to submit their till receipts (or the digital equivalent) at the end of the month so the airport/mall owner can work out how much is due (with the possibility of random audits of their IT system in case they are trying to cheat).

Far more complex than just 'I fancy opening a café in a mall - I'd like to lease these premises, thanks'.

I suspect the whole relationship can be described as mutually symbiotic parasitism - both airport and store are to blame for the bloodsucking prices that the punters pay.