I think the problem goes farther back than we think. Sports is still not seen as a viable career path by the kind of parents who have the money and the time and the attitude to make it work for their kids, in a convenient nutshell, the middle classes.
Track cycling provided a controlled and controllable outlet, bit like after school classes or extra tuition, and the development of a cycling base in Manchester has shown it can be done.
The problem is now, and has been ever since the Velodrome in Manchester was built, is that other less controllable forms of cycle sport don't get the same attention as track cycling. It has become self fulfilling; spend money on the track, get success, spend money on the track, get success.
Road racing in the UK got ignored and pretty much stiffed by the track cycling programme, leading to racers like David Millar, Roger Hammond, and so on going abroad and making it on their own. Wiggins and Cavendish are perhaps the best products of BC, but how many budding racers, both XC and road have we lost because they didn't do well on the track circuit?
The challenge for BC is now to concentrate on developing talent in forms of cycling other than track; we've shown that we can win track medals, how about doing it elsewhere?