Under this premise, investing in the arts is a waste of money, when you could invest in UX studies. Investing in the humanities is a waste of money, when you could invest in data analysis. Hell, why even have academia at all? Wouldn't it be better if education was managed and provided directly by the industry?
This fetish for optimisation only ends up hurting the sense of humanity in all of us. Not everything has to be done with the purpose of being disruptive, or in a frenzy for efficiency. Some people are just goddamn curious about bees and will study honey bees (as useless as it may sound) because understanding nature is a goddamn delight in its own right, even if it doesn't yield the next billion-dollar idea.
That innate delight and curiosity is where science is born. Let's appreciate that. It applies to STEM too. Maybe some academics don't care about your problems or in fact solving any problems at all, and decided to be in academia not for the "potentially-groundbreaking research" but just the thrill of finding new stuff and uncovering the beauty in the universe, don't you think?