Land and sea transportation can much more easily shift towards other energy carriers such as batteries. Or using electric trains instead of trucks, etc. For ships even nuclear propulsion might be an option if the CO2 price rises enough.
Aircraft, not so much. Liquid hydrocarbons have amazing energy density, both by weight and volume, and in aircraft that matters a lot.
After all, there isn't so much special about Jet A: I figure a PT-6 could run just fine on automotive diesel.