That's leaving aside the questions of insurance, local and federal regulatory approval, and waste disposal / decommissioning costs.
EDIT: What's that Bezos quote? "Your margin is my opportunity?" Same for renewables. Your delays are my opportunity.
Solar and wind aren't immune to this either. You don't want to generally build things say 10MW at a time - that would require 100 rounds of planning, regulator approval, engineering design and the like for a big utlity scale solar and wind plant. You generally do it in big chunks too. And there have been big holdups especially in getting grid interconnect.
IE What SolarCity is doing with their SolarBonds and the solar panel factory they bought in upstate NY.
I'm not aware of any.
I could have also pointed at Google's Sunroof project as an example of a large company betting that solar can compete:
I couldn't guess what energy producing and distribution technologies will be most prevalent in 100 years.
Advancements could just as easily be made relating to fission reactors, so I don't think it's fair to say that large power companies shouldn't invest in more reactors. But, I agree there is probably risk in investing in them.
It's not clear from that what the other operators are doing, but there seems to be some work put into replacing smaller turbines with larger ones that are less disruptive to birds.
Funnily enough, these old wind turbines are worth good money in pure raw materials. Expect near 100% recycling for them.