I don't think this effects the average flying school trying to cover operating costs and wages doing Trial flights/lessons or air experience flights.
I can see how an organisation that might own say a Tiger Moth, balloon or glider, who's normal activity does not include commercial flight training, with a volunteer pilot might give an introductory flight to someone that pays to cover costs.
But what is marginal activity, 1 in 10, 1 in 50 or 100 flights?
Wasn't all this bought about by the French in EASA land?