To answer you as best I can:
a. yes, I believe people are born either creative or not;
b. I believe the second is impossible;
What are you trying to say here, Rob? You don't strike me as a man of 'belief'.
Who on earth could be qualified to assert, when a child is born, this child is not creative, or not going
to be creative as he/she grows up?
Who can say to what extent our genes or our environment influence our future? Some so-called experts glibly assert it's 50/50, which means they don't really know.
I think Robert Frost's poem, The Road Not Taken, is relevant here.
Two roads diverged in a yellow wood,
And sorry I could not travel both
And be one traveler, long I stood
And looked down one as far as I could
To where it bent in the undergrowth;
Then took the other, as just as fair,
And having perhaps the better claim,
Because it was grassy and wanted wear;
Though as for that the passing there,
Had worn them really about the same
And both that morning equally lay
In leaves no step had trodden black.
Oh, I kept the first for another day!
Yet knowing how way leads on to way,
I doubted if I should ever come back.
I shall be telling this with a sigh
Somewhere ages and ages hence: Two roads diverged in a wood, and
I took the one less traveled by,
And that has made all the difference !