I don't know about bullet or powder manufactuers, but itw pretty blatantly obvious that gun manufactuers for the most part don't isten to us peons if they did: Ruger would make a high cap magazines for their mini-14 and pistols, they would make their mini-14 $100 cheaper and have adequate accuracy. Remington would have discontinued the 710 and 597 models and concentrated on making good model 514s. Savage would work on the asthetics of their rifles a little. Remington and winchester would put a nonflimsy synthetic stock on their bolt action rifles and ruger would put a synthetic stock on their that wasn't hideous.