If we assume 70 million people were paying 5 euros per head, that comes to 350 million euros per year. Yes, that allows 2.7 million sectors in 2010 to have been paid for from a fee-free payment method.
Yes, an "exit row seating" charge might bring in some revenue, but it's not going to be enough to cover all that money from card charges.
Anyone want to come up with other credible wheezes as to how FR might replace this income ? Will we see a return of the "Dream up charges as to how we can abuse you, and win a cash prize" competition ?