To stop buying everything is an extreme. You will have a hard time getting any supporters for it. Instead, ask people to stop buying useless trinkets. Like the iPhone's, the Android tablets, Coca-colas, Bonobos Khakis, Cadillac's, Nike's etc. My parents never had any of these things and even now they are not impressed one bit with all these trinkets. Yet, they lead a very happy and contended life. If you think about it, corporations lure you into buying supposedly "cool" stuff. They are in the business of creating the cool. Putting it out on the street and building a cult out of it. That's when you apply the brakes on your rationality and let the emotion take it on from there. And that's exactly what the B-school educated corporate managers love. Once you are in the emotion mode, they can take you on a roller-coaster drive to anywhere. That's where all the big margins and big money is. Don't succumb to emotion in materialistic matters. Hey! But that's the way wealth gets re-distributed in capitalism. Besides, if people stop buying stuff, many will become jobless. Materialism. That's the bedrock on which we have produced our sprawling populace. That is until the machines take over.
Banks: Seriously, I think all the banks should be nationalized. Bankers have no incentive to run the banks safely. They want to expand their books as fast as they can. They want to show they have a huge spread on their books. And then they want to turn the spread into profits NOW. What incentive do they have to ensure the quality of their assets? High quality assets are a low margin business. It's the low quality assets that are available in abundance and that's where all the big margins are. At least in the short term. Who cares for the long-term anyways? In the long-term we are all dead. The bankers then use jump-processes, diffusion equations, stochastic calculus, quantum mechanics, chaos theory, Alice in the wonderland, "what ever shows you are dumb and they are smart" to cover up the "quality" of their assets. Profits!