Good: most any airport in Italy, Malpensa is very good.
Bad: seafood at Heathrow is okay but extremely over priced.
Any JFK restaurant is bad in my opinion.
Most Admiral Clubs serve pre-made panini's and wraps...not very good and expensive. Heat and barf....
Good: AutoGrills on Italian autostradas..

A family member was a leaseholder at a major USA airport...rent is based partially on gross revenue, so, leaseholders jack up the price of their products or keep a separate set of books...oh no, that would be cheating!