John, you're missing the point a little. I'm presuming you pay for your recording time and your practice time like a lot of bands do. So in effect you've got to have jobs to sustain the hobby (no offence).
Great, you get gigs, walk away with 100 quid each. Pocket money if effect. Yes, you can give away you music fairly easily but that don't pay the bills…
These big bands like the Stones have been supported by their record companies for years and through greed (can't say if the bands greed or the record company) they've decided their fan base is large enough to sustain touring only and relying on their old back catalogue.
I'm not even sure how much the X-Factor winner gets out of the deal, I imagine Simon Cowell pockets most of the profits.
Unless you can get a really good viral campaign going like the Artic Monkeys did then potentially the audience isn't going to be there. Even that girl who supposedly 'broadcast' her songs from her basement was found out to be basically used by Sony who helped her.