You are proving my point. Extraordinary measures were required to make gasoline engines tolerate 10% ethanol. Then by government fiat EPA declared E10 engines may be force-fed E15 over the manufacturers' protest.
Flex-fuel vehicles tolerating E85 make extraordinary measures else why are all gasoline engines not FFV? Huge government incentives to be FFV. "Easy money", if it was as easy as you say.
Many parts used in fuel systems were not ethanol tolerant in decades past. Extraordinary measures were required to restore longevity with ethanol-laced fuels. Even yet there is a big problem with moisture that can not be resolved. E10 is not tolerant of water the way E0 could simply decant the water off the bottom of the tank.
E10 runs leaner than E0. Requires change in jetting. Requires ECU and fuel injection smart enough to dynamically change the mixture as not all E10 contains 10%. Labels state "up to 10%". Same for E85, as little as 70% ethanol may be sold as E85. Extraordinary measures must be taken to detect and compensate.
Same sort of thing for biodiesel, it is "a fuel that will run in a diesel engine", it is not the same as the diesel manufacturers have meet EPA emissions with, have had to learn how to pump and disperse with direct injection. The 2008+ Ford Powerstroke 6.4L was only certified for 5% biodiesel. None prior were certified for any biodiesel. Current 6.7L is rated for
B20. But not B100. While an EV can effortlessly use nuclear, coal, solar, hydro, natural gas, oil, ....