San Francisco is abuzz with excitement over artificial intelligence (AI), with major tech firms like Alphabet, Amazon, Apple, Meta, and Microsoft investing an estimated USD400 billion this year in AI-related hardware and research. Investors have boosted the market value of these firms by over USD2 trillion, anticipating significant future revenues. However, even optimistic projections suggest modest returns, such as Microsoft's expected USD10 billion from generative AI sales this year. Despite high adoption rates reported by surveys, actual business integration of AI remains niche, with only 5% of American businesses using AI recently. Concerns about data security, biased algorithms, and rapid technological changes are slowing adoption. Companies using AI focus on narrow tasks like customer service and marketing, with little evidence of significant productivity gains or economic impact. Overall, AI's transformative potential is yet to be realized, and substantial economic benefits may not materialize until after 2032.