AFAIK they did something like that before (ie. they offered x% off coupon, paid out of their own pocket), and several publishers adjusted their pricing up/down so their games wouldn't be eligible for the discount. I believe the reason was that they didn't want to "devalue" their games. random source: https://www.vg247.com/2020/05/18/the-witcher-3-epic-store-10...