The fact that the winner can no be openly touted as the 'Christmas Number One' illustrates the power of this show more than anything else.
The fact that the winner becomes a 'star' is a matter of fact, not possibility - it's sutaining a career when you are not in people's living rooms on a weekly basis that's the hard part -as so many of these people discover.
It is entirely possible to delude an audience that someone has far more talent than they actualy possess, by bolting on a 'personality' with clever editing.
Paul Potts was seen as a nice guy, singing 'Nessun Dorma' - result - stardom.
No - a doorbell could chime 'ND' and make it sound moving, that's the song not the singer.
The fact is, objectively, Paul Potts is an average singer who slids in and out of notes, rather than landing on them. Once his 'fat guy with bad teeth, but cute' image fades from the minds of the TV audience who bought his CD, he will sink without trace, because like the majority of reality stars, his talent is simply not strong enough.
The British love to 'adopt' their reality stars, but their attention span is is limited as their appetite is ovracious, so the treadmill that is shows like 'X Factor' rolls them out, shines them up, spits them out, sees them feted, then ignored, and starts again.
It's a licence to print money - wish I had thought of it!