When Amazon said in 2018 that it planned to build a second headquarters in Virginia, along with a sister office complex in New York, it was a symbolic moment for the tech industry’s increasing importance to the American economy. But the company’s decision made public on Friday to pause plans in Virginia — about four years after Amazon pulled out of its campus in New York — is the latest reminder that the tech industry’s long boom has slowed. Jeff Shulman, professor of marketing at the UW, is quoted.