I could not see an idea in your post, although I agree with the general sense. There is a lot of things happening currently on the DeFi space and what you descr

I could not see an idea in your post, although I agree with the general sense. There is a lot of things happening currently on the DeFi space and what you described fits what a DEX (decentralized exchanged) currently do, what would be needed is to deploy tokens for the commodities you would be trading.