We were early in talking about mobile being the principal vehicle for Internet access. The continuing discussion about the FTC terminating the investigation of Google has some detailed discussion on how search is being shaken up by mobile: Nowhere has technology changed as rapidly and consumer behavior as broadly. As people abandon desktop computers for mobile ones, existing tech companies’ business models are being upended and new companies are blooming. “Mobile is very much a moving target,” said Herbert Hovenkamp, a professor of antitrust law at the University of Iowa who has been a paid adviser to Google. “This is a market in which new competitors come in a week’s time.