The only thing that comes close to two separate companies selling the same product is maybe the 1980s Home Computer / Atari Gaming era. I totally get why it sold well. The Jym system is simple and its open label. You take the Pre and you take the Post, and you are done for the day. You don't have to spend a lot of time trying to fill the gaps in your supplementation. Heck, that's why I still use Pre and Post.