Magenn Power Air Rotor System - Awesome?

I came across this cool looking balloon thing, and read a little more about it. It’s called the Magenn Power Air Rotor System.

So, as an entrepreneur and someone who would like to leave a little Earth for my Grandkids someday, I find myself asking: Why the hell haven’t I ever seen one of these things in use before?

I mean, if I was a local city government, I would be buying these things like crazy. You float these suckers in the air, tethered down, and they instantly start generating electricity. It’s that simple! This could put every power plant in the world out of business, but why aren’t we using them yet?

I look forward to seeing these in use someday.

Have you ever seen one of these? If so, please tell me the details about when and where in the comments!