On the video Vaughn suggests that the existing prize-money structure is a socialist system but maybe it should be
Further on he states that there is no discernible difference between turnover on R and C class races so maybe they should receive comparable prizemoney
Think of it like commission work - if you are bringing in the dollars then you are entitled to your share

The worry is whether the grassroots trainer can survive. This will depend on whether they can win as much prizemoney ie as many R&C races or 2+ R races for every C they used to win. This would seem to be dependent on whether the bigger stables will concentrate on the C class races or whether they will attempt to corner both C&R. I fear they may do both

Using Vaughn's pie analogy
If there used to be 400 large pieces 2400 medium pieces and 800 small pieces
but now there is to be
400 very large pieces, 1600 medium+ pieces and 1600 small pieces
I think the bigger stables will eat more small pieces to keep their bellies full

If we lose smaller grassroots trainers I fear we not only have less people involved in the sport but also loose followers/owners from the communities from which they came.