That 40 x 40 pays a farmer a lot more than 40 x 40 feet of corn without harming the productivity of the other 100 acres of the farmers land. So where is the problem? The cost per kwhr between wind and nuke is getting closer and closer. Do you have any ideas on how much the two are becasue the term "fortune" is a bit vague?
Nuclear power averages at 0.521 cents per Kwh.
That doesn't seem like a fortune in those terms but you'd definitely notice the difference in you monthly energy bill if you power was derived 100% from wind power... and oyu'd have a lot of blackouts.
I'd take one nuclear plant over 1 coal plant and 1500 windmills.