AFAIK wind hasn’t changed much in a long time. Not much to improve really. Cost is materials and labour, both going up. Probably still cheaper then coal.
Can link a video about how they work, and the chalenges tomorow if you want.
Wind has come down a lot, just over a longer time. Solar and storage are what have really plummeted recently. https://ourworldindata.org/grapher/levelized-cost-of-energy
One of the big challenges now in the US is streamlining permitting, for renewables and for transmission upgrades and expansions.
I’d be interested to see the video you mention!
https://www.youtube.com/watch?v=LklUVkMPl8g
He goes on about the bigger picture, while I was thinking about just manufacturing and maintenance. That graph cost going down could be due to manufacturing ramping up. You need big machines to make big machines.
It’s interesting how fast the price per kWh went down. I’m glad.