It has been more than a decade since Jeff Bezos excitedly sketched out his vision for Alexa on a whiteboard at Amazon’s headquarters. As hype in the tech world turns feverishly to generative AI as the “next big thing,” the moment has caused many to ask hard questions of the previous “next big thing”—the much-lauded voice assistants from Amazon, Google, Apple, Microsoft and others. They don’t know what they can say or can’t say