The problem is that Travis thinks it's still possible to defend their monopolistic market share but I'd bet (just personal opinion) that investors don't feel that way. Honestly, what could Uber do to ensure their monopolistic world market share would last? They want to IPO soon so they can get some return. Uber has had years and billions of dollars, I don't blame investors for wanting to push the bird out of the nest and see if it can really fly.