Many technologies plateau, but we don't say they all have winters. Terrestrial radio winter? Television winter? Automobile winter? Air travel winter? Nuclear power comes close in terms of its tarnished image and reluctance to reinvest.
I personally believe contemporary AI is over-hyped, but I cannot say with confidence that it is going to lead to a similar winter as the last time. It seems like today's products satisfy enough users to remain as a significant area, even if it doesn't greatly expand...
The only way I could see it fizzling as a product category is if it turns out it is not economically feasible to operate a sustainable service. Will users pay a fair price to keep the LLM datacenters running, without speculative investment subsidies?
The other aspect of the winter is government investment, rather than commercial. What could the next cycle of academic AI research look like? E.g. exploration that needs to happen in grant-funded university labs instead of venture-funded companies?
The federal funding picture seems unclear, but that's true across the board right now for reasons that have nothing to do with AI per se.