Captain fourbars might not be paying for his fuel, but mum and the kids are. There's also potentially a couple of hundred of them. The airline crew don't know your capability and treat you as a risk.
It does also say in the regulations that air commerce should be given priority by private operations.
It doesn't cause a lot of grief to throw in an orbit or two near the circuit for a lighty. It could cost a career for an airline crew....
Glad I don't go to Ballina.