The dYdX community implemented a proposal for a market maker rebate program through a suggestion

ChainCatcher news, dYdX tweeted that the community has passed a proposal to implement a market maker rebate program. The proposal suggests implementing the rebate program based on the percentage of market maker trading volume relative to the total trading volume on dYdX over a 30-day period to incentivize liquidity.

dYdX stated that this proposal is merely a suggestion, as dYdX cannot determine fees and rebates through governance. (source link)