But sooner or later someone would have done it.
In reality, it's actually the 1000s of actual engineers that deserve most of the credit, and yet are never mentioned. Society never learns about the one engineer (or team) that solves a problem that others have been stuck on for some time. The aggregate contributions of such innovators are a far more significant driving force behind progress.
Why do we never hear of the many? It's probably because it's just easier to focus on a single personality who can be marketed as an "unconventional genius" or some such nonsense.
A effective leader whether it is Musk, Jobs, Altman, Gandhi, Mandela (or Hitler for that matter) has the unique to skill to be able to direct everyone in a common direction efficiently like a superconducting material.
They are not individually contributing like say a Nobel laureate doing theoretical research. They get accolades they get is because they were able to direct many other people to achieve a very hard objective and keep them motivated and focused on the common vision, That is rare and difficult to do.
In the case of Altman, yes there were 1000s researchers, programmers who did the all the actual heavy lifting of getting OpenAI where it is today.
However without his ability and vision to get funding none of them would be doing what they are doing today at OpenAI.
All those people would not work a day more if there is no pay, would not be able train any model without resources. A CEO's first priotity is to make that happen by selling that vision to investors, Secondly he has to sell the vision to all these researchers to leave their cushy academic and large company jobs to work in small unproven startup and create an environment they can thrive in their roles. He has done both very well.