The real sham has yet to materialize. You only get a single $1T IPO. For the AI labs, investors are tapped out, and the only thing left is a huge IPO. Google, Meta, Microsoft's cash reserves are drying up, they're squeezing operations for every cent, and sure they can issue some stocks to raise cash, but not $1T.
I think this bubble's failure mode matches that of a Ponzi scheme.