Amazon’s announcement of HQ2, a second headquarters, is about to set off an incentive arms race among state and local officials bidding for its economic promise. Elected leaders will leap at the chance to recruit Amazon, a widely admired technology company that has led development of some of the most powerful technologies of the 21st century, from cloud computing to smart speakers to drone delivery.  The company employs more than 350,000 people and has grown more than 40 percent in a year.

Amazon…