If the AI boosters are right about what the technology will be capable of in 5 years, at least some of the big player’s investments will be literally the most profitable investments that ever happened. This is a potential mispricing, not a system inherently incapable of paying off long term like the subprime mortgages were. I don’t think another step-change like we saw with GPT2/3 is likely in the mid-term future, but I don't think anyone has shown it’s virtually impossible.