What he meant by acceptance is that people hear the word "Alternative" or "Green" and the automatically assume that it is heavily subsidized by the federal government.
God forbid our government spends money on a technology that could actually scale up and add to our array of energy options. But hey, maybe you're content on paying $4+ per gallon of gas.
But John just said there was more demand then supply!!! Now its hard to find potential buyers? Following those two statements I can only determine demand and supply most both be very low.