maybe there should be a law if you want to create/start loading a new factory cartridge you have to stop reloading one? Or if a company creates a new round, you get to have your rifle rechambered for free, or just a free rifle if you already have say a 7mm RM, you can exchange it for a free/new 7mmWSM.

I remember reading an article on which cartridges we could do without....

Can you imagine if we only had 20 cartridges and every place that sold ammo sold all 20? not sure that would be good or bad...?
Maybe I'll post a 20 rounds only question...