This lawsuit is not about ryanair's pricing model, so that the company engages in bad practices is irrelevant to the court decision. What matters is that booking.com wants to earn money on selling ryanair tickets while evading using reseller agreements by using the site as if they were a private customer (likely also against the terms of service), with supposedly some bad side-effects like ryanair being unable to communicate with the customer (which could be bad if they wanted to e.g. give you a notice about the flight during the sales process).
You will have to sue ryanair specifically about their pricing to get a decision on that, which of course first requires ensuring that it is unlawful or unfair business conduct within your jurisdiction (which it might not be).
> bookingcom acts as a user agent in my service so why should Ryanair have any legal basis on preventing bookingcom from doing so?!
They are not your useragent, they are acting as a reseller: You buy a product from them which they acquire elsewhere, taking a profit in the process.
If they were in fact entirely transparent in the process, merely allowing you to purchase the product at the best available price directly (e.g., a plugin to find deals/discounts, VPN to get it from the cheapest region, etc.), then the case would have been hard or impossible for ryanair to make.
