An estimated one third of adults can be called soloists, people who work in non-traditional relationships with their employers. And the rate is growing rapidly, 15 to 17 percent every year. A soloist is, as George Gendron puts it, an extreme version of an entrepreneur and requires much of the same support and same capacities. George should know. He was editor-in-chief of Inc. Magazine for two decades, where he founded the Inc. 500 and worked with Michael Porter on the creation of the Inner City 100, a ranking of the fastest-growing companies in Americas inner cities.