You make a good point in how MUCH bass do people really want? There are times I play scenes just to see how they sound. But I never listen like that day to day at all. And frankly, having bass that overpowers speakers doesn't sound right so you have to proportionately dial in. And then unless you are listening amazingly loud, I'm guessing I use a fraction of what I have. So what difference would someone see if they aren't pushing the limits of their subs (assuming they have generally good subs and are dialed in appropriately)
It's kind of an expensive experiment to find out and a disproportionate investment vs what some might have in their speakers, receiver, amp etc.