I'm not sure what you mean. If by "small thermal", you mean heat-generating solar thermal, that tecnology in fact has little to do with CSP and is really low-tech. As for CSP, I don't see how you get it small and cheap, and how you "low-tech" the receivers, generators and mirrors.

Meanwhile, even though PV is high-tech, half of production now shifted to domestic companies of low-wage East Asian countries.

_{*Lunatic*, n.
One whose delusions are out of fashion.}