You put a penguin in a desert and it will struggle. You put it in a cold climate and it will thrive.
The point being, if you have the genetics for something but you’re never put into an environment for them to be utilised. You will never reach your true potential. I’m sure there are loads of people who would be naturally good musicians who never get exposed to it for many reasons, parents couldn’t afford instruments, parents didn’t want to hear their kids practicing etc etc. The same can be said about a lot of talents.
I suppose it’s one of the flaws with modern education, you spend 9am - 4pm learning a vast array of subjects. Some of which you may have a proclivity for, some you won’t. If Mozart had to sit through 6 hours of maths, English and science everyday as a child he might not have been such a good composer. His Dad noticed his natural gift as a performer and composer. And let him dedicate himself to it entirely. It fosters an environment in which genius can develop. Of course the counter argument is that a good rounded education is vital to most people, and that is true. But it also holds back true genius because you spend a whole lot of your time learning things the system tells you that you have to learn.