With over 200 B737-800s in the Ryanair fleet O'Leary is really stuck with that aircraft unless he wants higher operating costs. So Boeing has no need to offer him a loss-making price and other manufacturers won't waste their time knowing O'Leary is likely just to be using them to get a lower price from Boeing. Having lead Airbus up the garden path last time and then tastefully boasting about 'raping' Boeing, O'Leary isn't going to get a bargain this time.