in fact I lose a lot of respect for people that go on talent shows because most of the time they haven't worked for it, they've just turned up for an audition and got lucky. They are musicians but not ARTISTS.
This made me think of an At: Guitar Centre interview with Zakk Wylde, he said (and I paraphrase):
To be a doctor, you need to go to medical school. To be a welder to need certifications. To be a musician, you just have to show up.
(If I can find the original quote again, I'll amend the above) It kind of rings true though, you can get lucky and be in the right place at the right time. Most of these talent show winners make it big when the are in the top 3, but they have no idea how to stay there. Artists/musicians who had to get there by playing the empty bars, learning about promotion etc. are the ones who tend to last longer. Or if they are able to keep churning out the hits (be it their own, or recording other people's work).
That's why you get the Paul Potts and SuBo's of the world. They have talent they can perform, but as soon as all the media hype dies, so does their career. It's like riding a geyser. the water jet shoots you up 100 feet in the air, but then it stops and unless you've learned how to fly, there is only one way to go. the other 2 that spring to mind (and the last time i really watched one of those popfactory shows) was with Will Young and Gareth Gates. They both did well for a while, but soon they faded into the bargain bin.