NEW YORK As throat-cut competition heating up to get ahead of their rivals, Microsoft and Meta are spending big in developing AI technologies, some investors are asking if that much spending is worth it. Microsoft delivered solid quarterly results on Oct. 30, beating analyst expectations with revenue jumping 16 percent to $65.6 billion, but questions were raised about the company's big spending on the AI boom. The company has been at the forefront of the generative AI revolution, largely thanks