The tyranny of the marginal user reminds me of population ethics' The Repugnant Conclusion.[0] This is the conclusion of utilitarianism, where if you have N people each with 10 happiness, well then, it would be better to have 10 N people with 1.1 happiness, or 100 N people with 0.111 happiness, until you have infinite people with barely any happiness. Substitute profit for happiness, and you get the tyranny of the ma…
Many versions of utilitarianism never specified the function to compute the sum for the many. Your example assumes that the function is simple addition, but others have been proposed that reflect some of the complexities of the human condition a little more explicitly (e.g. sad neighbors make neighbors sad).
I much prefer, "I'd rather have a bottle in front of me than a frontal lobotomy." At least in that case nobody will confuse a trucker hat slogan for a viable system of ethics.