Where was the "defraud" happening here? When Ryanair wants to make money on flights they shouldn't offer flight tickets that only make money when they can lure the consumer to purchase addons via a boatload of dark patterns.
For me as someone looking to book a flight, bookingcom acts as a user agent in my service so why should Ryanair have any legal basis on preventing bookingcom from doing so?!
Side note: Where is a service where I can just enter from/to which city/airport I want to fly (or in Europe also rail), what luggage and passengers I carry, and it spits me out the cheapest price offered for the route and sells me the ticket(s) without having to create individual accounts, spread payment info around and try to fight myself through a shitton of dark patterns, broken English and constantly changing UIs? I know this shit is possible, travel agents live and breathe for that stuff, but I'd like to do that myself instead of getting upselled by the travel agent. Rail and flight should be dumb pipes.