PV entrepreneurs are the real heroes of the climate movement, IMHO. They figured out markets that would have enough demand to push forward with developing the tech. Germany's government is a major hero too, they pushed the tech forward so far at a crucial time. Then China took up the mantle.
Both supply and demand need to build together for the industry to grow. Government subsidies played a huge role in accelerating this, and will have paid for themselves so many times over. We're going to live in a world of super-cheap technology thanks to the modest tax-cut-based investments of governments the world over.
It does suck that so many powerful people were against the obvious-in-retrospect good idea of solar PV, but I'd love to focus on all the heroes that pushed through anyway and made it happen. They deserve a lot of thanks!