You're looking at it wrong.
All teams are effected by juniors going to other clubs. The Broncos has (had) a 10 x advantage in recruitment over NSW sides, hence you being able to put together a very large list of Brisbane juniors who now play for other clubs.
In its hayday, the Broncos geographical juniors base was the same as that of 10 Sydney (including the Raiders) clubs.
Prior to the inclusion of the Broncos in the NSWRL, the cream of Qld playing talent went to Sydney. For a few glorious years (1988 until say 2000) that cream of Qld playing talent went to the Broncos.
Until the Cowboys, Storm and Titans entered the competition, the Broncos owned anything outside the borders of NSW.
Cue the 00's when NSW teams realised the depth of Qld Cup talent and started partnering with Q Cup teams (Raiders, Storm, Manly).
The Broncos now can't look back on the heady Cyril Connel days where you could just hold a state wide carnival, send Cyril out and get him to pick the best players for a contract.
The Broncos (and their fans) can't also just assume the nexy Darren Lockyer will come along in this generation to solve all our problems. Players like Corey Norman, Ben Hunt - very good rugby league players, would play first grade at any club (see Parra's big $$), but not the cornerstone of a dynasty like Langer/Lockyer.
With a level recruitment playing field the Broncos can't be expected to reach the heights of previous generations. The inevitablity of a second club in South East Qld corner will test the strength of the Broncos as well. The club needs to realise its fans rarely look beyond the petulant child glasses of "why we not win, I no support you now" and seek a more meaningful engagement with its fan base - the 25 year celebrations are a great start. But so would be petitioning Channel 9 to hold more Sunday games so we're a family club and not a corporate Friday night drinks club. Corporates will pull the sheet once the success dries up, loyal families who go for the experience together will still fork out their $100 a game plus yearly merchandise.
Hopefully the club still has enough "culture of success" capital banked to ride that into the next phase of the club and not make the mistakes of other golden era clubs that just thought the good times would keep rolling but have endured decades of - Souths, St George, Parramatta, even the Storm once the big 3 and Bellamy retire.
