This will be ridiculously easy to evaluate. If the article is true and wind is less expensive, then it will attract private investment money and a lot of it. Investments in wind will far outpace investments in other kinds of power generation (coal, nat gas, nuke, etc). And it will do so without assistance from the government or any other agency via subsidies or other legislation that encourages one technology over another.
Is that happening? No. In fact, it's quite the opposite. Thus far, without government subsidies and diktats, the wind power industry can hardly survive on its own.
As always, follow the money.