I find the implication of yours and the OP's that I (collectively-owners,breeders,trainers) of racehorses would be less than honest because of money to be less than polite.
There are many areas where I feel there is need for improvment in the indusrty. As was previously stated, you cannot beat or starve a horse into winning, it just doesn't work that way. You can, however, "dope" a horse. Either to mask pain issues or to enhance performance. Stricter enforcement and stiffer penalties are needed.
If you want fewer foals on the ground, which I agree with, you need to raise the purses for aged horses. The longer a horse races, the more they are proven or disproven and the less time they spend in the breeding barn. The results are less foals that are better conformed to hold up to the rigors of their racing and post racing careers. We recently retired our 10 yr old race mare, we "lost out" on probably 5 or 6 foals from her but when she's bred next spring we'll have a very good idea of what she shouid be able to produce.
There is big money and big comptition in every equine decipline. There are ethical and unethical owners/breeders/trainers in every decipline. And there are horses bred for every decipline that don't made the grade. Racing is not unique to these problems. So, I'll grant you this, if you go to someone in any
decipline and ask them about banning their
decipline, your probably going to get a little "attitude"