I doubt it very much. Most people under 50 today, think of the disposables when they think enema. We klysmo's are a dying breed.
Many U.S. pharmacies don't even carry syringes today, just disposables. I read a post here that in the U.K., you have to go to "sex shops" to get enema equipment. Most of us use on-line companies to buy syringes, or purchase from E-Bay, or Amazon. Rubber equipment is just not a big seller in pharmacies, so they have to use their shelf space to carry other items that DO sell.
U.S. Big Pharma., doesn't give a hoot about this very small market of enema equipment. The only companies that even care about it are C.B. Fleet and the makers of generic disposables. ALL of the U.S. companies that used to make rubber goods (Davol, Goodrich, U.S. Rubber) have gotten out of that business and most of those items are now made overseas.
Medical associations have no "conspiracy" to stamp out enemas. They are all about using less labor intensive procedures, that give nursing personnel time to do more important things, like pass meds, wound care, IV care, etc. That is why we don't see things that were done routinely in hospitals in the 50's, not done anymore: Nightly back rubs, bed baths, changing bed linens with patients in the bed.