The Financial Post reports in its Saturday edition that it has been three years since OpenAI set off euphoria over artificial intelligence with the release of ChatGPT. A Bloomberg dispatch to the Post says that while the money is still pouring in, so are the doubts about AI's future. From a recent sell-off in the shares of Nvidia, to Oracle's plunge after reporting mounting spending on AI, to souring sentiment around a network of companies exposed to OpenAI, signs of skepticism are increasing. Looking to 2026, the debate among investors is whether to rein in AI exposure ahead of a potential bubble popping or double down to capitalize on the technology. The queasiness about the AI trade involves its uses, the enormous cost of developing it, and whether consumers ultimately will pay for the services. Those answers will have major implications for the stock market's future, especially for Alphabet, Microsoft, chipmakers Nvidia and Broadcom,, and electricity providers such as Constellation Energy. If they stop rising, the equities indexes will follow. Still, reasons for optimism abound. The tech giants that account for much of the AI spending have vast resources and have pledged to keep pumping in cash in the years ahead.