A couple great quotes from Charles Leadbeater in the October 2004 edition of Fast Company about the changing landscape in business, with a shift toward networking, collaborating "professional-amateurs":
"The 20th century was marked by the rise of professionals in medicine, science, education, and politics. In one field after another, amateurs and their ramshackle organizations were driven out by people who knew what they were doing and had certificates to prove it. Now that historic shift seems to be reversing. Even as large corporations extend their reach, we're witnessing the flowering of [professional-amateur] bottom-up self organization."
"Knowledge is widely distributed, not controlled in a few ivory towers. The most powerful organizations will enable professionals and amateurs to combine distributed know-how to solve complex problems."