IBM doubled its generative AI bookings in a single quarter.International Business Machines (IBM -0.24%) has long been an AI innovator, but the iconic tech giant has historically struggled to turn AI into a bona fide business.IBM's Watson AI system famously beat top-tier Jeopardy! champions in 2011, a feat that came more than a decade before OpenAI's world-changing ChatGPT. Attempts to parlay that accomplishment into revenue and profit, however, largely came up empty. Watson Health, IBM's high-profile play a ...