Thanks for the YouTube video. That guy makes some great videos.
The similarity between Ryanair and Southwest is their domestic market dominance, not their business model.
I've always argued that there really isn't a Southwest in Europe. It's Legacies and ULCCs. Frontier and Spirit management always likes to talk about how the ULCC market share in Europe is like 40% (or whatever they claim) and therefore F9 and NK can grow to that level. The only problem with that argument is the existence of Southwest.
I am a huge believer in the ULCCs here in the US and I'm betting my career on it, but we're never going to be as big as the ULCCs in Europe are. Southwest occupies too much domestic market share for us to get that big. I think the ULCCs will definitely grow a lot here, but will never be a dominant player