In our experience, if the situation seems regrettable but reasonable - a bad thing that in good faith could have happened to anyone - most CSA members will rally, if they already know and trust the farmer. These people are more likely to take the long view, especially if they have received an abundance of produce in the past. They are naturally more likely to think, "It'll be better next year," than are new members who have nothing to which to compare a dismal experience. The take-home message is this: if the potential for "not getting your money's worth" makes you feel anxious, then shared risk may not be for you and you should shop at the farmers market.
In 2007, higher incentives for farmers to grow non-food biofuel crops  combined with other factors, such as over development of former farm lands, rising transportation costs, climate change , growing consumer demand in China and India, and population growth ,  caused food shortages in Asia, the Middle East, Africa, and Mexico, as well as rising food prices around the globe.   As of December 2007, 37 countries faced food crises, and 20 had imposed some sort of food-price controls. Some of these shortages resulted in food riots and even deadly stampedes.    The International Fund for Agricultural Development posits that an increase in smallholder agriculture may be part of the solution to concerns about food prices and overall food security. They in part base this on the experience of Vietnam, which went from a food importer to large food exporter and saw a significant drop in poverty, due mainly to the development of smallholder agriculture in the country.