Mr Zuckerman was speaking at the TED Global (Technology Entertainment and Design) conference in Oxford.
He said that the web was now contrary to the original utopian vision and users focused on information from a handful of wealthy countries.
"It's making us 'imaginary cosmopolitans'," he told delegates.
Social networks, he said, made the problem worse with the majority of people sharing information with folk who share their world-view.
"We think we're getting a broad view of the world, because it's possible that our television, newspapers and internet could be giving us a vastly wider picture than was available for our parents or grandparents," he said.
"When we look at what's actually happening, our world-view might actually be narrowing."
Mr Zuckerman, an entrepreneur, blogger and researcher at Harvard's Berkman Center for Internet and Society, said that it was his aim to change the situation and realise the original vision of the net.