Because that much power would destroy the wind capture device.
A better question is:
Why are empty fields are not being filled with devices to harness the massive amount of turbulent winds that are near to the ground? And why aren't we making dual use fence and wind capturing devices? Most fields are surrounded by fences.
Farmer's fields are empty typically 2 to 4 months out of the year. In that time if every farmer harness the wind, they could probably generate enough power to power the US for a couple years.
i guess if you lived in Florida or New Orleans. And we can not just predict the storms. We can also control them and send them in whatever dirction we want with atmospheric resonence technology, something HAARP has by now , I'm sure, got down to science. So, yes, I think that there could be a lot of untapped power there. Those storms cause so much destruction. It's time we figure out how to use them for good.