YouTube's network effect creating a winner-take-most was recognized, pitched, and valued from the very start.
The capabilities of LLMs are impressive, but none of them have published an idea I consider to have the same potential for a trillion $ monopoly that the current hype looks like.
There are far more similarities with the dot-com hype.
No critical first mover advantage in sight. All parts are replaceable for the cheapest variant with little to no down side to users.