If you are a high-frequency trader, no rebate = making money while bleeding
Day trading contracts, arbitrage, and friends who jump on the market as it comes:
It doesn't matter how much you earn, the fees are too harsh.
For every trade you profit, the platform takes 0.5 from you;
For every trade you lose, you have to incur additional fees.
Having a rebate is really not optional, it's a necessity.
