What are the variable "fixed" costs? And when are they incurred?
This is about revenue maximization, not user enjoyment maximization or fairness maximization.
Ultimately I don't think most artists actually want revenue maximization - they're probably far more interested in fairness maximization in ensuring their fan base of all economic strata get to see them live.
I don't think anyone would make that decision; the bar for good enough is pretty low, and if you won't get any incremental revenue (no one is selling or advertising on the various parameters of audio quality), why would you spend that money?
If you're selling out shows at double the price, wouldn't the next step be to reduce the sound quality so you can play cheaper shows with a higher profit?
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.
This is about revenue maximization, not user enjoyment maximization or fairness maximization.
Ultimately I don't think most artists actually want revenue maximization - they're probably far more interested in fairness maximization in ensuring their fan base of all economic strata get to see them live.