Did you know that the order type determines whether or not you are Market Maker or Taker?
The distinction is important because Takers are usually charged a higher free while makers get a discount.
The treatment differs in order to balance the risk or opportunity loss the trader is incurring.
For example, a Taker can "take" liquidity by buying/selling immediately with a "MARKET order" and enter and exit without having to wait to be filled, but pays a little more fees to compensate market makers.
Maket Markers on the other hand, are offered discounts as an incentive for them to lock their capital in LIMIT orders that help increase the depth and density of the order book which helps price discovery.
There are token that trade with 0 fees for Market Taker and Market Maker in Spot
such as $USDC $USDT