Only when speculation is destroyed will construction occur.

So after AI speculation is destroyed, the U.S. stock market crashes, and the builder will come back. Or WWIII.
“The middle class expands on a large scale, and social mobility reaches a historic high. But this golden age’s existence precisely hints at a profound problem: it exists because the infrastructure and psychological expectations of financial speculation were destroyed by the Great Depression and World War II.
Humans will not proactively choose to build; humans will proactively choose to speculate.
Only when speculation is destroyed will construction happen.”