Originally Posted by
corporate-wage-slave
Though perhaps TBIT is on the curve, airport shopping isn't such a thing in the land of otherwise unbridled capitalism, which is strange. There again many airports in the USA are effectively nationalised, and that includes JFK.
My guess is a large part of it is where there is a high-mix of domestic flights you lose the "savings" of Duty Free and domestic travelers are less likely to buy things outside of conveniences at the airport. T4 at JFK, the D Concourse in MIA and Terminal D seem to have more shopping, maybe because they have a larger mix of international flights.
Not sure ownership has much to do with it.