If you are willing to jump through a few hoops, your local airport will sell you av-gas which contains no ethanol…
The oil companies are in the business of selling petroleum and had to be FORCED to sell ethanol through their established infrastructure. They did not give that gift to the ethanol industry willingly…
Their attitude was and still is: "If ADM corp wants to sell ethanol as motor fuel, fine, let them do it without government subsidy and let them build their own ethanol stations while they are at it…