Well said, but speaking strictly from my experience, I really don't know if I had an in-born talent for music to begin with, because I started playing at such an early age. And I have abilities and skills as a result of hard work on my craft.
Something I do have besides these skills are ideas. It usually starts with a rhythm that I hear in my head, and then once it doesn't leave for however long, its only a matter of time until I find a melody to put to it. I don't know if that's a matter of talent or experience.
And I completely understand your "Field of Dreams" theory. You can't expect anything from anyone. Anything you get as a result of your efforts is really a matter of how hard you push and long you can keep pushing. But there's other issues such as luck and who you know that can also either make you or break you.