[houseinthesky]

> Whatever the reason might be, rationally it's time to at least ask "can it ever make an impact"?

The reason is because it's been denied a chance by government regulation, due to a mixture of fossil fuel lobbyists and people's irrational fears stoked by propaganda designed to make it seem scary.

The answer to "can it ever make an impact" is yes, it can, using existing technology, right now. We just have to get rid of the regulations designed to destroy it.