Tech stocks are struggling. But there are big differences between now and the 2000 internet bubble, Goldman Sachs says. - MarketWatch

1. Goldman Sachs finds no AI bubble; investments remain attractive. 2. Current valuations of tech stocks are lower than during dot-com bubble. 3. Nasdaq has surged 58% since AI trends began, indicating strong growth potential. 4. Investors face uncertainties evaluating AI's future economic impacts and winners. 5. Dominant tech companies earn higher multiples due to strong fundamentals.