Robert, you ignored the point that I made previously:
The portable phone was competing with an inferior product capability (e.g., CB radio and walkie talkies). Solar power will be competing as an alternative to an energy production and delivery system that is ubiquitous and which is effective despite its long term problems.
I think it’s the other way, you ignored my points or didn’t understand them. Solar power will be competing with inferior alternative energy productions, which will be more expensive, less reliable, more dangerous, time consuming, require heavier maintenance, dirtier, non renewable, and have little or no public and political support.
Economic incentive alone is the crushing blow. No one is going to pay more for energy than they have to, regardless of whether it’s an environmentally conscious individual, penny pinching corporation or ruthless business model seeking to make money.