Uber COO says there's a downside to being at the top

Uber COO Andrew Macdonald said large companies with new ideas move more slowly than startups as employees get "fat" on the resources. Zed Jameson/Bloomberg via Getty Image Uber is one of the largest ride-hailing companies in the world, with more than 200 million users. Uber COO Andrew Macdonald said that kind of scale makes innovating at the company harder. The executive said Uber has a program called "Growth Bets" to incubate new business ideas. At the top, it's hard to know where else to…