In reply to SenzuBean:
I think the worn-out truism about the last tree and not being able to eat money is sadly one of the most insightful things that was posted in this thread because that's really where the problem lies.
The world economy is entirely hung off fossil fuels and money (often not even real money) and everything we see stems from that. Why did the oil price fall? It was game theory and the fact that cheap oil was a dominant strategy for many players. Cheap oil is the worst possible thing for the environment.
Amazon's single item orders and dedicated buttons to spam them. Single-use everything. New iPhones. Plastic stirrers. These are all the problem because they are dominant strategies for some player. It's cheaper to buy unsustainable plastic stirrers than to pay someone minimum wage to wash tea-spoons and so someone gets a bonus because they save some money - probably a bonus they use to buy a new iPhone or a bigger car.
And there, again, is the problem. Money is used to determine entitlement. If I can afford a bigger car, I obviously deserve a bigger car and am entitled to buy it and drive it. If I can afford a new iPhone, I deserve to upgrade whenever Apple make another one or I decide I don't like the bling-gold colour of my old one any more. (Out of character: I do not own an iPhone.)
Shipping food across the world from some third-world country also yields a better profit margin, even considering shipping costs. Cheap bunker fuel is very dirty but that doesn't matter. Shipping food is a dominant strategy and growing it locally isn't and so we have our food shipped across the world.
Now it is always possible not to buy the iPhone, not to buy the bigger car and not to eat food shipped around the globe but you have to actively choose to disadvantage yourself to do this. For me, not buying a new iPhone is easy because I don't like iPhones and, to be honest, I couldn't care less whether I have the latest phone or not - as long as it runs WhatsApp (Grr! Privacy! Bugger off FB.), it's enough for me. Also, I'm quite happy with "a car" that gets me to the mountains and don't need more. But food? I simply don't have the income to afford sustainable food, in general. Game Theorists define a "rational agent" as a player who chooses the dominant strategy, should there be one and should it be known. Most humans are probably rational so as long as the cheap food is there, people will buy it.
There's also a cultural issue at play. We have allowed our culture to create an environment where the "worth" of a person is defined by their possessions. iPhones. Fashion. Having the latest. Keeping up. As long as the new iPhones are released every six months, people will buy them.
The same culture promises everyone that they can have instant gratification - that they're entitled to it. As long as Amazon will ship single items, next day delivery, people will order them.
Can any individual, with or without a democratic vote, do anything against this? Not a chance! Nothing short of a revolution will affect the status quo and people are the very system chains people to their sofas, watching game of thrones and twitting on their new iPhones, catching up with the Kardashians on Facebook, getting the "feels" from some listicle, eating their ready meals or Mc Donalds.
The sheep are drugged with bread and circuses and the revolution won't come until these things are threatened.
When the people rise up, I'll be there. When we're all shouting that we're angry and won't take it any more, I'll be there. Until then, I'll be up a mountain, eating the most sustainable food I can afford and wearing out my old and unfashionable gear.