So it is only gov't subsidies that lowered the cost of solar? I doubt that and I don't think you'll produce any evidence to back that up. Government subsidies may end but the technology will continue to develop.
Not entirely. Shifting production away from first world countries with environmental laws and protections, to third world countries with none, was the biggest cause, but do you really want to poison brown people?
Or are you saying it's ok to poison brown people?