![](https://lemmy.world/pictrs/image/8fd91283-419e-4374-88e1-89d71677fe78.png)
![](https://lemmy.ml/pictrs/image/d3d059e3-fa3d-45af-ac93-ac894beba378.png)
I guess it could be that it’s easier to build. You have a tower that only gives structural support and you have a gondola that only deals with all the rotation. In general it is difficult to have something that rotates and also carries a large load. And the rotating gondola technology is a solved problem. Plus you have a large rotor area that is always facing the wind instead of half your blade area going opposite to the wind. These are just guesses though.
I do the same when wiping my phone. Some time ago I wiped it carfully and suddenly all the colors changed until i tapped the screen again.