Sharing revolution?

Writing in the Times, Jeremy Rifkin strikes an optimistic note:

The unresolved question is, how will this economy of the future function when millions of people can make and share goods and services nearly free? The answer lies in the civil society, which consists of nonprofit organizations that attend to the things in life we make and share as a community. In dollar terms, the world of nonprofits is a powerful force. Nonprofit revenues grew at a robust rate of 41 percent — after adjusting for inflation — from 2000 to 2010, more than doubling the growth of gross domestic product.

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