Market forces prevailing?
Have the other Clubs colts programmes caught up, or will the clubs benefit from Uni programme graduates (albeit possibly unhappy ones) rocking up and lifting the standards at the receiving clubs because of their experience and expectations gained from the Uni programme.
Meanwhile, Uni get a new bunch of raw recruits to work on. Seems like a real win-win situation with some credit to go to Uni for raising the standards across the board.
Alternately, some players may actually not be as good as they think they are, and they don't like the reality that they may be forced to confront at Uni, where they aren't treated like Rugby Royalty and fawned over by sycophantic and vicarious Coaches, Masters, Parents, and Old Boys as they were when they were in the 1st XV in Year 12. Check out the number of posts in the Sydney Colts 2012 thread compared to the GPS 2012, ISA 2012, or CAS 2012 threads.
Credit where it is due as well please. I know of several boys at Uni that were not Aust (or NSW) Schoolboy rep players but they have worked diligently within the Uni programme and have consequently gained and retained Colts 1's and Grade positions over some players who have much better schoolboy rep pedigrees. Some players when released from the Schoolboy system struggle with the transition from 1st XV schoolboy star to Colts, and are unable to maintain their training disciplines, and form outside the School pressure cooker environment.
Maybe some impatient former Schoolboy Rep darlings need some HTFU cream.
Edit: Grammar :".better much schoolboy rep pedigrees.." to ".much better schoolboy rep pedigrees."