Convince someone buying a new iPhone to buy last years model or half the GB of what they can afford.

That's the greed that's ingrained in all humans. "Humans take the perceived path of the most pleasure." is true in every human interaction I've witnessed or can think of.

We're all greedy by default. I think Agent Smith was right when he was talking to Morpheus, humanity is a virus that consumes all the resources in the local environment until they're depleted without thought for the greater good.