"LLMs are here to stay," is like saying that the modem-based internet of the 90s was forever. It was a largely unusable piece-of-shit tech that was manifestly incapable of delivering beyond a fraction of what the dot-com bubble promised, but it prompted investment in fixing the one thing that prevented that promise: bandwidth.
I can't emphasise strongly enough how this ISN'T happening with LLMs. They are throwing all their money into building ON the broken tech and next to nothing in developing a replacement that has an actual chance at fulfilling the promise LLMs hint at, because there genuinely aren't any plausible pathways to get there from here
The modern AI Bubble is 100% a "modem speeds were good enough and the dot-com companies only failed because they didn't have enough funding to get them over the hump created by the government's regulatory fight with Microsoft" delusion.