Indeed, never say never! I saw people with no experience at all in drawing, nor any skill learn to draw as well as great artists out there.
A lot of it is technique which everybody can learn! What differentiates artists the most i think is how they choose to express themselves, by choosing certain styles, colors, themes, and how their pictures feel like ... that is what makes the artist special in my opinion.
And all their life flows into that, so i guess you could say that they are born, because each of them has such different experiences that express themselves either more or less relatable/influencing to their audience, and it also decides whether they keep going with art or not.