Should we (as an industry) be buying captive bred clownfish whenever possible? YES
Should we (as an industry) be pushing for as many captive bred fish as possible? YES
Should we try to minimize our effects on the ocean, fish, and corals? YES
Should clownfish (or any others) be put on the endangered list because they may have a problem in the future? NO.
I would guess that most clownfish that are sold in the United States LFS are captive bred. That probably isn't the case in China, Vietnam, and other countries around there. It probably doesn't make financial sense to set up breeding programs for clownfish there. I do believe they do have breeding programs there though. Clownfish (and a bunch of other fish) are pretty easy to breed small scale. If I can do it, anyone can. I've supplied a bunch to the LFS, and I know there are a couple people on the board who have my fish.
I'll be honest though. I have mixed feelings about buying wild caught fish when there are captive bred alternatives, especially when they are the same (or very similar) price. I've done it for my breeding pairs though. Why would anybody buy wild caught clowns when they can buy captive bred ones? Wild ones tend to carry more parasites, don't acclimate as well, and can be finicky eaters. It doesn't make sense to buy wild caught when captive bred is available, and you don't have a specific need for wild caught.
If I can go off on a tangent...
Part of the reason that people don't "like" captive bred fish is because breeders don't cull their fish enough. Culling for color deformation isn't critical (and sometimes they sell better), but any pinched fins, bulldog faces, messed up gill plates, and deformed spines NEED to be culled to keep captive bred fish "up to par" with wild caught. It hurts every breeder when someone doesn't cull fish that should be. If you breed fish, please, cull mercilessly. It will help you, and all the other breeders.