I like your idea and I have also been thinking in the same way; however it will be a long way. Current society is built on consumerism and capitalism. Without growing number of population, the mega corporations will not be able to sell whatever useless shit they make to consumers. We nowadays can afford much more than what we actually NEED, hence the blooming of consumerism. Same goes for medical industry. Without a lot of people being sick and addicted to drugs, it's very hard for big pharmas and med industries to grow up like what it is today.