Wasting energy should not be an opportunity for revenue, but of course it always is, for differing reasons.
The word "waste" here means that there is a maximization of resource consumption while simultaneously minimizing physical utility to humans (utility as in Utilitarianism).
At least as an weak version of my argument. In reality, it is not resource consumption that is maximized, it is free-loading resource usage of the commons while still maximizing profits.