Hitchcock made "Psycho".

Miyazaki made "Princess Mononoke".

While you can say Roger Deakins shot "Blade Runner 2049" or Hans Zimmer scored "Interstellar", even these masters of their craft paired with directors to make their films. The film is still typically the work of the auteur director, and the director (usually) exercises control over all of these pieces.

You can tell when that doesn't happen. You can tell when the producers exercise outsized control. Or when the studio controls the editing table. And it's not like that's ever kept a secret - people talk about this openly and loudly when it happens.

Musk built his empire, and even if he bought his way in, he still used his unique methodology to turn it into what it is today. "Founder Mode", if you will. Same thing with Steve Jobs.

All of this hand-wringing about who painted the shed in "The Evil Dead" doesn't matter. It's Sam Raimi's. Everyone else on set dances to the beat of his drum.

Software can (and will) be like that too.

Game design, company formation, product development, you name it.