The other issue is the margins are razor thin. Energy has to be cheap: so the issue is $1 billion going into this (1) might not be enough to have enough scale to make any money at all and (2) is competing with anything else you could do with $1 billion.
Which is why you need government subsidy if you want something to happen: but the you are also betting that you've picked either the right technology (it works at all) or at least you're accepting you're probably going to overpay.
Which is why you need government subsidy if you want something to happen: but the you are also betting that you've picked either the right technology (it works at all) or at least you're accepting you're probably going to overpay.