I read that, on average, Amazon collects 50% of the cost in fees; from sellers.
You right now can set up a site on Shopify and sell your goods.
If you are selling a differentiate product instead of cheap crap imported (or drop shipped) from China, you can create demand without going through Amazon.
For instance, I was specifically looking for Samsonite zipper less luggage because I trusted that brand and it wasn’t available on Amazon. They chose not to sell on Amazon and I bought it directly
I'm not going to bother explaining further, but thanks for confirming you don't understand the issue. It's not my job to educate you.