I think once the infrastructure is in place (transmission lines, etc) then it's easier to upgrade existing and it's certainly more lucrative than having to go through it all again. Which is why it's likely to be overall less intensive for renewables to develop than traditional fossil fuels, where you have to stick your straw into as many milkshakes as possible, and keep moving on. Once it's gone - it's gone (recognizing that there is infill and rejuvenation in some instances for O&G). Once coal is burned - it's gone. Once oil is out of the ground, you have to keep exploring & developing.
Wind doesn't do that, neither does the sun. Yet still, the idea that we have to sacrifice even more land fopr power generation after the millions that we've already lost, should be unacceptable to most of us.
Edit: This is precisely what companies are doing when they convert from coal to nat gas - reducing cost, increasing supply & increasing profit.)
Nat Gas killed coal much more so than anything the Enviros did.