Good on them. In reality, however, fuel from the sun is free and we have unlimited land. Getting the cost down and economies of scale are what everyone is really focussed on.
Basically, every square meter of land in the U.S. is already being used for something that people will defend, even if it is sparse desert land. Sparse desert land is a natural ecosystem, and there are many people and nonprofits who work hard to protect natural ecosystems from disruption by man.