so i don't see the path to AGI either, certainly not with LLMs. but there is some very useful stuff to be done with deep learning, and LLMs are a pretty amazin advance for search, translation, communication and user interfaces. but it's not the next industrial revolution.
i don't see the sunk-cost fallacy angle, just the sunk costs. the capital allocators will absolutely shut off the spigot when they see that it isn't going to yield. yeah, there could be some dark data centers. not the end of the world, just another ai winter at worst - maybe a dot-com crash... whatever.
the world is way bigger than the techo chamber