This doesn’t seem to pan out in practice. Higher volume target shooters tend to reload, hunters don’t, so they put more burden on factory ammo. Equally, target shooters are an exceptionally small subset of firearm and ammo buyers and owners. Somewhere around 1/3 of Americans are gun owners - around 110million people - whereas annual participation in competitive shooting sports is assumed to be around 4 million (around 20 million total entries per year in sanctioned shooting sports events, with most competitors shooting in multiple events per year, which naturally accounts for relatively high volumes of fire for pistol and shotgun shooting sports, and most rifle shooting sports are proportionately lower volume of fire, and lower participation (hard to keep up with action pistol!) - in other words, the 1500 participants in PRS, and few thousand benchrest, F-class, and Service Rifle shooters out there don’t buy more factory ammo or rifles than the 16 million hunters (typical hunting licenses sold in the US per year), or ~95 million other casual, non-competitive, non-hunting firearm owners.