What looks like sector collapse is creative destruction: Advertising’s indie shops are going to win more business against the last lumbering giants, thanks to their laser focus on speed, strategy, and creativity. It’s been an unprecedented and brutal week for the advertising industry. The finalization of Omnicom Group’s $13 billion acquisition of Interpublic Group (IPG) (the biggest takeover in advertising history) is affecting tens of thousands of workers—most immediately the 4,000 expected to be laid off by the end of the year.