Not going to work in the more arid parts of California, which are the locales needing the water. If there’s very little moisture in the air to begin with, there’s not going to be much condensate to capture.
Thinking about this without delving into the science-if the area is so dry/rain deprived that moisture must be wrung out of the air, wouldn’t that lessen the possibility of rain? Assuming a low moisture content of the air to begin with,and atmospheric conditions that are arid,would such technology eventually be useless due to constant moisture extraction? That wouldn’t be good.