Maybe they allocate it differently, but that doesn't mean it is irrational or being done 'badly.'
I’m more sympathetic with what you are getting at than you might think. I would never begrudge someone their preferences.
But as a matter of personal judgment, I would never invest with someone who buys kilobuck cables and interconnects (if and until they can demonstrate a functional audio difference). Nor do I think they are they likely to be able to allocate capital in any other ways that increase productivity or human flourishing. So they spend it and someone else gets those resources. That’s the beauty of a free market.