There are many examples in life where I have seen people and recognized that if this person were born in a slightly different household, slightly different time, slightly different economy, etc. - this person would have made it big!
I have actually seen this in many places.
One example on top my head- my neighbor was a talented video editor. Not legendary level, but okay. He eventually set up shop for editing wedding videos and such. He got contracts, he got praises and contracts in affluent families- all of this was not enough for sustaining a middle class life for an adult. He eventually set up a convenient store with the help of his father in law. He was quite old and had to move on to earn a middle class income. He did not have access to internet until early 2010s.
Now, his nephew, who is also my neighbor is also a video editor. But he got internet since he was born. He has all the resources. He has discord servers where people guide him and share resources. He is also an online gamer, and edited his own videos and posted them online. That led him to international contracts. Last month he earned US$120 working a single night.
That's HUGE for a 19 YO in small town India. Had his uncle (now in his early 40s) had all these, he would have made it big.
Circumstances do influence heavily how much a person succeeds.
I don't hold the line that equal opportunities lead to equal outcome- that doesn't happen.
But do think about the child that was born today in slavery in Libya, and a child born to a FAANG worker parent in Bay Area.
Do you think that they have equal chances of success?
And, I will also mention that Picasso had neighbors and peers. They didn't become as famed. Talent and individuality matters, too.