Exactly. Democratic systems serve society better than non democratic ones, but a strong democracy can only be as good as its people. If the voters lack the wisdom to limit their consumption, both for sustainability and their own satisfaction, they’re doomed to make things worse.
Someone with fewer resources can be much happier than someone with a ton of them. Philosophers have long recognized that certain pleasures only grow more demanding when you feed them, while having sustainable consumption and gratitude is much more stable. As you consume something like meth or opiates, your brain gets used to it, requiring larger and larger doses to get the same effect. With pleasures that are similar drugs, this will eventually harm your happiness and well-being. Our brains cannot remain in a perpetually euphoric state, so we must limit these pleasures.
Certain drugs or pleasures are so euphoria inducing that there is no moderate consumption. Some people have a harder time moderately consuming pleasures that others can tolerate, resulting in addiction disorders.
With the wealthy, their greed is dangerous and addictive, but because it often doesn’t directly harm them and they warped society to accommodate it, it should be handled as more of a criminal condition than a clinical disorder. They get hit after hit from opulent excess, but they always try to get more, and will never satisfy their desire. We must criminalize excessive consumption from individual wealthy people.
Average people also overconsume finite resources, but that is better addressed by taxes, regulations, and incentives for alternatives. Law will be used, but not in the same way as when dealing with the rich.