On the market for sustainability

Prompted by reading Jared Diamond’s Collapse, I did a bit of information foraging on the progress of some sustainable environmental practices.
One of the bright sides in the US is organic agriculture, which has been growing by more that 20% annually for over a decade, and about 40% of consumers have bought organic food. The growth has taken organic food mainstream – most organic food is now bought in ordinary supermarkets, and organic companies, for better and worse, are being bought out by big food conclomerates.
Organic food still accounts for only 2% of the overall food market. But 20% annual growth can lead to a “tipping point” in a decade or two, when production techniques considered “niche” today become the norm.
The big deal, it seems to me (with no special expertise other than homework) is soil health. With organic farming, soil fertility is renewable, but conventional agriculture mines the soil. Soil degradation can lead to disastrous Easter Island-style problems.
Fisheries and forests are also being mined to the point of collapse. Jared Diamond mentioned the Marine Stewardship Council as the most reputable organization that is certifying fisheries for sustainable practices. The Forest Stewardship Council provides similar certification for forestries.
The activities of these groups seem less mature than organic agriculture. There are 11 fisheries that are certified by the MSC today, and 40 that have applied for certification. According to the most recent newsletter, 4% of the world