OpenAI should continue to be controlled by a nonprofit because the artificial intelligence technology it is developing is “too consequential” to be governed by a corporation alone. That is the message from an advisory board convened by OpenAI to give it recommendations about its nonprofit structure — delivered in a report released Thursday, along with a sweeping vision for democratizing AI and reforming philanthropy. “We think it’s too important to entrust to any one sector, the private sector o...