This is a really interesting question. I feel like I see it with airlines all the time. The question that comes eventually though is do people notice and does a culture of penny-pinching trickle down into an inferior product that makes people resent the high price enough that sometimes they won't pay it.
I mean that's literally yield maximization - you don't need to capture all the demand for a given good or service. You just need to capture the right mix of it. I would broadly say that I don't think anyone who goes to a typical Arena concert is making their buying decision on the audio quality.
