Excuse me, but that is what a mandate IS. They are REQUIRED BY LAW to blend a specified amount of ethanol into the gasoline. Unless you don't drive, you have to buy the ethanol. So the oil refiners are REQUIRED to buy the ethanol. There is no way around it.
There is a station 15 miles from my house that sells straight premium. Go electric, or mass transit,especially in CA. People without cars in big cities don’t buy it— is the law after them. No, because no one forces them to buy it.
Do you own a refinery? No, so no one is forcing you to buy ETOH.