The dream is close because... it's a dream.
Practical reality? That's another thing entirely. Yes, there is an incredible amount of energy (nuclear energy, mind you) that is radiated to us from the sun, but by the time it hits the the ground it's pretty unconcentrated - and turning that diffuse energy into useful energy is non-trivial.
Solindra didn't fail just because it was a political deal gone bad - renewable energy is hard. If it was easy everyone would be doing it.
We are living on borrowed time with cheap fossil fuel energy - but getting off of it isn't going to be as simple as sprinkling a few wind and solar farms around and hoping for the best