The utility companies don't really care about whether your power is solar, wind, or oil, they care about being the ones to sell the power to you. As costs come down, more and more homeowners are getting of the electric grid completely, forcing them to squeeze their remaining customers harder to keep profits going, making going off-grid more appealing. A decentralized electricity model is the death of their industry.
There are a lot of industrial scale wind and solar arrays out there owned by big business, it is the off-grid stuff that they are trying to quash...