These guys are "building a more efficient market for flights" so they might need the kinds of connections and insight YC promises. If the founders are amazing and yet they need help producing their show you assume it's all a funding issue. They're from Australia; they don't know tech angels or Silicon Valley, they know YC. Even if all they think they need is money I don't know any angels who are clamouring for unreferred new blood, do you?

Success in the flights industry can be lucrative but if you don't hit a home run you get zip. Solution: impress some knowledgeable, connected people who will be determined to help you if they like you. These guys passed, maybe they have reason to be happy.