Just playing devil's advocate here:
You want cheap flights then this is the price to pay, shops.
Airport operators are increasingly hit by the airlines and CAA regulations ensuring the aeronautical revenue/profit are constrained and tightly out of their control.
Shops, car parks, all ancillary elements are fair game and make far more than your average landing fees!
And anyway, is the LGW North Terminal 'snake' really that bad, please, just walk through as quickly as possible and find a seat or your lounge. Talk about hysteria!