Has e-commerce gobbled up brick-and-mortar? To answer that, let’s start with a brief history. eBay exploded onto the scene in a big way in the 1990s, and challenged some very long-held beliefs: Would people trust online commerce? You bet they would. People not only trusted e-commerce, but devoured it. Zappos, PayPal and countless others ballooned to $1 billion revenue businesses. By…