How Does the Fee Structure in FPPS Compare to the Concept of a “Bid-Ask Spread” in Financial Markets?

The FPPS fee structure is not directly comparable to a bid-ask spread, which is the difference between the highest price a buyer is willing to pay and the lowest price a seller is willing to accept. However, both concepts involve a cost for service or liquidity.

The FPPS fee is the explicit cost miners pay for guaranteed revenue and variance risk management. The bid-ask spread is the implicit cost traders pay for immediate liquidity and execution, which is the market maker's compensation.