Investors were confronted this past week with four difficult realities that may fundamentally change the way they think about AI the business vs. AI the technology:💰 AI is too expensive, say CEOs and even Microsoft itself.🗑️ It's not paying off nearly as much as companies expected, per a new Bain study. ⛅️ Infrastructure demand is strong — but not as strong as the most optimistic wanted, as Broadcom showed with its "weak" forecast. 🏦 Financin…