My permaculture is not profitable. I spend $6k/yr on water alone. I spend $12k/yr on misc. I now have found people to trade plants and seeds. I had a 3 acre farm in Northern New Mexico which I worked for 12 years. I still own the land. I never made money on it. I did learn a lot about no-till farming, ponds, irrigation systems, tractors, welders, etc.I still lose money on it, and I don't sell it because I have 60 ft giant sequoias I raised from seedlings, a pond with beavers, ducks and water lilies. I started a food forest on a piece of property in Santa Barbara where my property taxes are more than my mortgage, utilities and property taxes in New Mexico. If I worked at my job as many hours as I work on my land I would more than double my income. If I were to count everything I have eaten by the pound, I am sure the cost would be about $500-1k per pound, if I don't count pumpkins, cost of the land or property taxes. I certainly don't spend more on my hobby than my friend spends on his airplane. What do I get for my investment? I get to experiment with living things. With plants I get to play with genetics, environments, harmony, aesthetics, recycling, composting, all at a very low risk level. At work I deal with people at a very high risk level. The attitudes/philosophies that I develop gardening become a permanent part of my being everywhere I go. I don't care if I lose money because I am part of a group of people that are experimenting. When I look back at what I could find on permaculture in the 80's versus now, wow. That is the thing about science. You slave for years to discover one fact, one piece of the puzzle, that people then learn in 2 minutes. (Just like the Zen story of the man who spends his whole life digging a tunnel through a mountain to save people's lives. When done, people walk through the tunnel in mere minutes.) The alchemists trying to turn lead into gold, started the modern science of chemistry. 100 years from now, people may look back at what we have done and see it as foolish. Maybe the only way for mankind to survive this technology is to become cyborgs. Sounds far out, but that is one solution to competing against groups of people with access to massive quantities of privatized data and computing power. I do think that Frank Herbert really fleshed out some of the various options for survival in Dune. Whether those survival models are the ones that will materialize isn't relevant. What is relevant is painting your life the way you want, and putting your shoulder to the wheel in the way that you enjoy or think you can contribute. For me, the permie movement a logical outgrowth of the hippie movement, but instead of centering around ideologies and art/music, it centers around the concept of sustainability. But this is just one group of humans idea of survival.
As a physician, I started out studying herbs, TCM, naturopathy, yoga, meditation, diet. What I found is people on all sides drawing hard lines, fanatics I would call them. I met a prominent permie suffering from congestive heart failure that could have benefited from some of my western medical knowledge. A motto I believe is "Alternative and dead is not a victory". With plants, sure you can be a fanatic with alternatives and you just lose some plants. With people, you can lose lives and friends. I think what the question of economic viability brings forth, is questions about reality, imagination and fanaticism. When I went to medical school I asked in our cardiology block, "what about Dean Ornish's work on cholesterol and heart disease?" The teacher led the class laughter as I was the obvious alternative student. Once there was a profitable anti-cholesterol drug, the 'pro' research just poured in. The desired LDL level changed by 2 standard deviations and finally a study was published stating that 6 months of lipitor at 80 mg/day was the same as stenting or bypass. This process took 15 years. In the mean time, driving across country as a vegetarian became easier. Friends who started health foods and products became millionaires (some failed on the way) and had their products bought by mainstream food and household manufacturers. Does alternative medicine really work? This question is much the same as the permie profitability question. Certainly, healthy food, clean water, restful sleep, rewarding relationships and jobs all play a part in health and when all of those are optimized, then you run into genetics. Genetics are like the soil you grow you crops in. Changing genetics is not something we know much about. What will work? What will be successful? It will take a lot of time, money and effort to solve this problem. But in the mean time, I was talking with a friend who is working on the climate change problem about the concepts of permaculture, and he decided it would be useful to try to develop deep ocean permaculture with kelp. Now a whole new area of science has opened up. Will it become profitable? We will see. For now, like most people playing with permaculture, the dream is there, but the reality is not. The only way I can see permaculture working for a vegetarian is to either breed fish, like koi, as part of an aquaculture project, raise collectible or sellable animals or plants, 4 crop with solar or wind energy or have a gig like yurts or bed and breakfast. Remember, when you are competing against the big boys, you are competing against cheap foreign labor and 'energy slaves' (cheap petroleum/coal/nuclear energy) and an industry that has been government subsidized for over 100 years.
If you want to get some idea of what will happen to permaculture in the near future, watch what happens with the culture of marijuana as it becomes legalized. You will get to see what happens to an alternative/underground science when money, education and talent move in. Do I think this is all bad? Not at all. Because the marijuana counter-culture demands organic cultivation, and the profit curve is there, you will also see a huge growth in production organic techniques. There are people that think you can cure any illness with diet and traditional techniques. I would remind you that pesticides are really a post-WWII development so if eating organically solved our medical problems, we would have solved our medical issues 100's or 1,000's of years ago when everyone ate organic, there was no acid rain, etc. Clearly, if it didn't work then, it won't work now. But that does not mean there aren't many things that we can do to influence the expression of our genotype.