I agree. While we all know people who just seem to have a "knack" or know-how and ability to do certain things well, you don't see those people on TV doing those things professionally. Those pros you see are highly practiced, and the upper-tier performance you witness is a direct result of the sheer number of hours that person has put into that activity.
I had musically-inclined friends who you can hand an instrument they've never touched before; they'll turn the instrument over in their hands to analyze it, and then begin playing the instrument as if they've played it before to my amazement. (That, to me, is talent.) However, I don't expect to ever see them in an orchestra or fronting a band any time soon, because they don't put the work and focus into it.
My own story of being a gawky no-rhythm white boy who couldn't keep time even by tapping his foot to music, to a journeyman bass guitarist that late great friend Richie Havens once paid the highest compliment to, is an example of what can be done with studious practice.
-Sean