Fuji
If Farnborough allowed cheap access to light aircraft, then they would start having to turn away light jets. How much money do you think one of them pays? How much money do they spend on fuel, handling and catering?
It's the way capitalism works. Supply and demand - if supply is lower than demand then the price goes up until demand drops or supply increases (not possible in this case unless price rises enough for Blackbushe to establish an instrument approach).