Sadly, wind power scales up MASSIVELY with blade size and height. The inverse makes it mostly non-viable for most homes.

They need consistent, strong winds to function well. Power output scales with a cube of the windspeed (2x wind speed = 8x output) and the square of the blade length (2x length = 4x output) This means they need to be considerably above everything that slows the wind down. Once you're 50m+ above the tallest trees, you might as well just scale up the blades and go grid scale, you've done the hard bit.

Oh, and from the article, it's 200W average, in perfect conditions. Conditions that almost no one can meet.