Earlier quoted context omitted.
All energy problem reduce to problems of energy transportation. We have a huge fusion reactor in the sky. The challenge is capture and transit. The problem is not incidental; it's fundamental.
As long as people won't even try to install a solar concentrator while bitching about rising prices, I won't take any of them seriously. Such a simple design, can be used for at least heating water for 3-6 months. But nah. Same for which the roofs. You don't have a white/silver roof on your house? Fuck you. On that note, you like cruise ships? Also fuck you.
Circumstances might not be as simple as you you think they are.