yeah, but companies that compete on price have an unfair advantage when it comes to differentiating. Price is something immediately obvious internally and externally.
As far as marketing price, the key, really, is to make it clear you aren't skimping on the really important things (like, say, flight safety) and the best way, I think, to do that is to be open about what you are skimping on. we all want something for nothing, but most of us don't believe we can actually get it.
But, my point is that any idiot (even me) can provide a "vision" for a company that just wants to be the cheapest. Really, the only hard part is deciding what to skimp on.
It gets a lot more complex if you have other goals, like say, Virgin, who I would call the "apple of the sky" - I mean, for both companies, the mission is to be comfortable and to appeal to "cool" people even if they might cost a few more dollars than the competition.
(note, I actually fly Virgin sometimes, even though I don't buy Apple products. For me, the in-flight wi-fi is worth around $50, so if the difference between Virgin and the next carrier is less than that, the decision is made. But, I think Virgin thinks of itself as more than just "the company with WiFi" as more and more other airlines are adopting that perk.)