Coasthugger. I am afraid you live in a very naive world if you believe that airports treat us (by us I mean Ryanair) equally to those other 'virtual' low cost carriers.
Tfly (in my opinion) probably pay four times the amount we pay to airports in terms of passenger fees. What airports dont understand is that Ryanair is the one that will be around in 25 years, Ryanair is the one that will deliver on its promises of volume, Ryanair is the one that offers year-round reliable, lowest fare seats to passengers on the most modern aircraft available.
You'd be surprised how greedy airports get with a taste of success. And the gulible airlines that are willing to pay more - instead of concentrating on driving costs down-ward.