Sumner Redstone, the swashbuckling billionaire who built what is now ViacomCBS Inc., died on Tuesday at 97. He used to say that he would never have a legacy because he planned to live forever. News reports would qualify it as a joke, though with Redstone no one could be entirely sure. His hard…

When US antitrust laws were first written more than a hundred years ago, the word “data” had a slightly different meaning, referring mainly to facts and manually-compiled information. You didn’t hear it much in everyday language, and it certainly wasn’t associated with trust-busting. In the digital…