Not quite as quiet as perhaps you perceive BB - PIK is more than just 4 scheduled winter FR movements in that there is a mix of GA, cargo, fuel / tech stops, military and training movements.
Which still generates a loss of nearly £10m. For an international airport it is a ghost town. Even as a regional airport, it is quiet.
GA makes no money.
Military tech stops make some money (but I thought Greer took most of that)
Gannet makes a bit.
Car Parking probably makes quite a bit.
Concessions and Duty Free won't make much.
Freight probably makes a wee bit.
Fuel sales to CV and AF and Ryanair should make a bit.
The terminal costs a fortune to heat and light.
Salaries usually make up a huge chunk of any business out goings.
Maintenance would eat up cash.
The airport needs leadership that has imagination, enthusiasm and a clear vision for what the airport needs. The current top squad just do not have that. If they did then they would not be responsible for the appalling situation the place finds itself in today.