Some individuals are to a degree. The "minimalist" movement as of more recently. But that's far from the answer. Well at this level of involvement, if many many more were involved then it would be something. At least at this point it hasn't scratched the surface of the issue. But it's something we have had programmed into us for ever. Progress is what gives people purpose. Our entire system built on consuming. and being asked since birth what your going to be when you grow up. As if your going to be anything different then you are at that moment, a person. But our identity is our job which again is based around some form of consumerism in most cases. It does seem the most obvious answer would be to do as you said. But again as you said it would destroy basically everything we have known and been taught. Not for all but us commerce based countries.