a 140 IQ person with an LLM can have many times more value output over 100x 120 IQ people with LLMs and 10,000x more output over 100x 100 IQ people with LLMs.

First, 120 is usually just past the pretentious halfwit range. Ignoring machine learning, the only reason this would be true is the difficulty and cost of managing increasing amounts of people. Assuming that there's acceptable leadership, it's better to have 10 people ranging from 140-105 IQ with diverse backgrounds (not the intersectional type) than three 145s of similar background. The Wisdom of Crowds book cites at least 1 study showcasing how important it is for a team strategy to not have blind spots resulting from groupthink.

A rockstar is still capable of unique invention, so 1+ genius shouldn't be discarded if possible.

VIs only benefit is lessening the burden of less virtuous or misaligned individuals on the more productive. The homogeneity they output reminds me of the Irish potato famine, however British oppression plays into it. Certainly not gauranteeing 1 borderline genius to out profit 100 borderline smarts working g together.