It seems to me, the industry is built around the 2 and 3 year old stakes racing.
Yes, that is the area where the big $$ boys spend a shit load of money to buy the best, but it is also the spot where the smaller stables invest, hoping to find that middle/low priced yearling that one of the big boys x'd out because of a minor confirmation, that may never affect their gate or was x'd out because of a pedigree link that isn't desired.
It's also the area where fractional ownership sell the dream and bring new people in, providing not just race day excitement, but that thrill of victory, agony of defeat process of training them down.
I think race integrity and competitiveness can be better controlled via conditions than claiming dollars.