This is nonsense. You can be critical of libertarianism but this is not a “reason that libertarianism doesn’t prevail”. You can easily find reviews online - airline x has bad service, airline y has small seats, etc. and then make a choice whether to fly on the airline. And to be frank, right now the airlines suck pretty hardcore (and airports too) because they are regulated (TSA anyone?).

I’m all for critiquing politics ideologies, I’m a social democrat and I think it’s valuable to find flaws and improve them, but this is a very silly “critique” of libertarianism that just doesn’t hold up to any scrutiny.