Oh no, you are absolutely not wrong. But there is a difference in 'based on' and 'copied'.
Indeed, Ryanairs business model is based on WN
's, just like easyJets, Wizzairs, and virtually any LCC model. Vueling has indeed be inspired by JetBlue, they also have a representative in the board of directors.
However, Ryanair is a different airline from Southwest. Indeed, O'Leary has been inspired by WN
's tactics, took from it what he thought he needed for 'his' Ryanair, and developed it further. One of the veyr important things he scrapped was the offering of connections. He also changed apsects of the importance of passenger comefort, adjusted price levels, removed flexible tickets. So indeed, Ryanairs business model is based on that of southwest, or inspired by, but it's not the same. Also, Vuelings business model is based on JetBlue (that is, on it's turn, based again on Southwest - Neeleman, founder of JetBlue even started his career at Southwest), but it is adjuested to the European situation.
A nice view on how easyJets model is based on the Southwest model, but adjusted, is given in the presentation "USB Transport conference 2005" on http://easyjet.com/EN/Investor/investorrelations_presentations.html
[Edited 2006-01-17 22:03:40]