Now that Nvidia is the most valuable company, all this talk of actual AGI will be washed away by the huge amount of dollars driving the hype train.

Most of these companies value is built on the idea of AGI being achievable in the near future.

AGI being too close or too far away affects the value of these companies- too close and it'll seem too likely that the current leaders will win. Too far away and the level of spending will seem unsustainable.