Mike Boland: Given the attribution possibilities, its scale, recent delivery partnership with Starbucks, and existing Uber Eats infrastructure, Uber’s move into advertising looks pretty inevitable. Of course, it would have to gain internal competency as an ad company, so look for acquisitions or talent hires (or both) in 2019. And look for more rhetoric about the latest company to challenge the duopoly, this time in a very local way.