It's the talented players I was referring to. Those with a choice, those with prospects however slim. Take an SANFL club for instance. Clubs have 70-80 kids going through their U/18 program in a given season, same numbers in their U/16 program plus development squads at U/15, U/14 and U/13 level. Also country squads. Hundreds of kids every season. All dreaming of getting drafted and thinking they're a chance. Even if they actually like running, surfing, boxing etc better. The money on offer is the biggest advantage AFL has over other sports. It's natural that people gravitate towards sports that offer the best opportunities.
These kids existed striving to make state teams, league teams etc prior to their being a large financial incentive. Want a job that keep you fit for footy, be a garbage collector.