Why The Network Effect Is Such A Powerful Economic Moat By: TalkMarkets May 28, 2020 at 08:03 AM EDT Network effects are one of the most powerful economic moats in business. What they are, why they work, and what to look for in a potential investment. Read More >> Related Stocks: AT&T Inc Amazon.com Etsy Inc Facebook MasterCard Match Group Inc Twitter, Inc. Verizon Communications Visa Wayfair Inc eBay