Welcome to capitalism, supercharged. There's a reason that in the long run economic profit of firms is theoretically 0. If you're making substantial margin off

Welcome to capitalism, supercharged. There's a reason that in the long run economic profit of firms is theoretically 0. If you're making substantial margin off a product, and doing so in volume, other companies will naturally want to compete with you to sell it. You either have to innovate faster than them (and thus win customer loyalty) or get into a brutal price competition which pushes both your profits to 0. Keeping your products off Amazon isn't even a defense against this. It's hard to keep a lucrative product secret for long. Cash cows eventually moo. Your margin is Amazon's opportunity. Get used to it.