I have to say that I'm amused that you seemingly blame the worsening of the rabbit overpopulation problem on rescues. Breeders are not "scapegoats", however, if there is a huge overpopulation of an animal that is difficult to place in a dedicated home, and you are mass producing those animals and undereducating your customers, you have a high burden of blame.
The major problems that we run into (as a rescue group that gets a high volume of surrender requests from rabbits)...
1.) The care recommended by breeders often has no scientific basis and can be extremely bizarre and off-kilter. Because of this, breeder rabbits frequently require expensive medical care which can be extremely expensive for non-profit groups. When asked to change husbandry advice, they are often staunchy defensive, claiming that it "always works for them". However, most breeders are not dealing with senior rabbit issues -- they are concerned for their rabbits only as long as they can win on the table. So while most of this bad advice may not immediately kill a rabbit, it is extremely bad in the long run and leads to serious senior problems.
The very nice man who was pawning his rabbits off on a hapless public next to me at an expo that I was volunteering at was the perfect example of this. He had no idea about having house rabbits at all. He insisted to all of his customers that rabbits must live outside, and that they "couldn't" live inside because they chewed things. Now in the summer, it easily gets to be 113 with the heat index taking into account the humidity, we have a plethora of parasites (mosquitoes, ticks, etc), and a variety of natural predators adept at breaking into outdoor enclosures. People were also told that rabbits loved to be held, were great for kids, and were very low maintenance. And I watched person after person snag a baby rabbit for $10.
2.) Because buyers are unprepared, their rabbits are at a higher risk of being abandoned. When their child is scratched or bitten while picking up bunny, they are angry. When bunny starts spraying their apartment and eating the carpet like crazy, they are angry. Because they are unfamiliar with rabbits as pets, they dump their rabbits.
3.) These uneducated owners often are unwilling to spend serious vet money "on a $10 animal". This does not seem to be a factor to breeders in denying a purchase. They do not advocate or require by contract a spay-neuter. Doing so would make their rabbits more likely to remain in their homes (as it controls more hormonal misbehaviors), would make people less likely to have 'oops' litters from missexed animals (or purposeful stupid 'omg lets have babies' litters), and would garner significant health benefits for the animals.
Finally, there is a serious bent in the rabbit world that is extremely concerning. Breeders tend not to seek vet care for their animals, prefering a "do it at home" approach which leads to the deaths of many animals. They justify this because they "cannot afford" the vet for so many animals (hobby breeders typically have between 30-200 rabbits). It's understandable. Our rescue houses perhaps 15 rabbits, and we've spent around $5,000 on vet care this year on the rabbits alone.
Unfortunately, rescues can neither force breeders to stop selling off animals to the unsuspecting public, and most breeders are extremely resistant to adopting better husbandry because it is more expensive and makes their lives more difficult. It is obviously easier to keep animals in a tiny area on wire floors for the least amount of cleaning. Typically these cages are 18"x24" stacking cages. That is 3 measly square feet. Less than half of what non-breeding sources recommend for a guinea pig. Rabbits are fully as intelligent as cats. If someone was breeding cats all stacked up in their garage in 3 square foot cages, people would be incensed. Why are people so defensive of rabbit breeders?
Even enlarging these cages for more roaming space and adding toys and activities for them to do would improve their lives tremendously. I have actually had breeders tell me that "rabbits don't move much" so they don't need much room. To that, I call BS. The rabbits I'm fostering now roam the whole house with joy and are extremely active -- and they're EIGHT years old.
Overall, the "ARBA" way of life is not the best for rabbits, but breeders are highly defensive of their practices and unwilling to encourage each other to move towards more humane standards because it means a reduction in their herd numbers and more money and time output to care for their animals.
We are as gods to the beasts of the fields. We order the time o' their birth and the time o' their death. Between times, we ha' a duty. - Terry Pratchett.
"Men have forgotten this truth", said the fox, "But you must not forget it. You become responsible, forever, for what you have tamed. - Antoine de Saint-Exupéry