Does the world need permaculture to feed it? I hope so! I would like to see this become the normal way of feeding the world after peak oil and irrational subsidies that allow rape and pillage style agriculture to exist fall by the wayside. The thing is, at this point in time, with no real standard set, limited scientific support (yay for big business supported agricultural "research"), it is basically more about supporting ones own direct family or community rather than even being thought about as the methodology that could help humanity reconnect with the reality of a living, resource limited planet. Community supported agriculture (CSA) and farmer's markets appear to be a good fit for the person trying to make a living from the philosophy, but I just believe we may need some bigger overall organizational approach. It is not about making money to buy a new car, to go for a weekend at Vegas, etc. It is about using that money to protect the philosophy from those that may try to slash and burn our farms by using the legal system that currently does nothing but support monopolization and monoculture. It is also about having money to do things like donating it to the organizations that are seeking to make a difference through protecting what little we have left in the world of natural systems and environment (
http://www.trustfornature.org.au/about-us/our-services/ for example). If we practice the idea of subsistance living, all we are truly doing is isolating ourselves from the world and either waiting for "armageddon" or praying that no one wants to pressure us out of what we have built (rates for instance, something of a massive problem here in a Australia as they use it to push farmers off fertile land so they can develop more suburbia...yay. Another thing in Australia, if they discover something "useful" in the way of minerals, oil, coal, etc under your land, the law stands that they own the rights to it and can basically do what they want to extract it at their leisure). A good example of what can happen -
http://en.wikipedia.org/wiki/Yacouba_Sawadogo
http://www.youtube.com/watch?v=Dzah_5y65AU
So I guess I am saying the more that we can integrate the philosophy of permaculture into mainstream thinking the better. And the way of the world (of man) is that money talks.