I doubt we'll have a big bubble pop though, big tech will continue to invest in AI at similar values or increase the rate, what may change might be the hardware sales (bear on NVidia), but the run after AI talent will continue to happen for many years and possibly increase. Also, with more specialized hardware people might run away from expensive h100s towards cheaper alternatives or ASIC solutions.
Many small startups without a PMF will all fall apart, though, with OpenAI and other more established players surviving and potentially focusing on more profitable products (like ChatGPT) than newer initiatives or "AGI" research.
I suspect the true market size is not close to the lofty hundreds of billions all things considered.