“So as soon as we agree to stop HEAVILY subsidizing oil, roads, airports, etc, as well, we should stop subsidizing ethanol.”
What has “roads, airports” got to do with your premise - we would be using them no matter what fuel our vehicles used and THEY - the roads and airports - are public enterprises to begin with, unlike the private enterprises involved in ethanol, which also, unlike the oil companies, get taxpayer money directly handed out to them.
I’m waiting for the day when I can drive past any gas station with my middle finger up, regardless of they are selling.
Thy Hydrogen economy can’t get here fast enough!