What part of wind power is changing so quickly? It's a freaking propeller driving a generator at the end of the day. Yes there have been some novel developments in ways to catch the wind but what part of that is so vastly changing the cost?
Energy storage (i.e. battery banks, etc.) are moving incrementally forward. Despite a dozen or two "breakthroughs" in the lab over the last 2-3 years nothing has increased energy storage density by the promised 10-100x at similar or lower cost - and THAT is what's needed to make wind power practical.
Datacenters and big box stores run on "renewable" power because they get tax incentives and green stickers they can plaster all over their company. At the same time you need to understand what 'buying renewable energy' means in reality. Say power company X generates 365MWh of renewable energy a year and some incremental higher cost than their regular generation capacity. Some days they make 0 and others they make 2 so it *averages* to 1MWh/day. ...So they sell 365MWh of cost increment to companies who want the green stickers. However that power is NOT directly routed to those customers. That power goes into the grid, combines with the baseload generators (nuclear, coal, gas, etc.) and THAT powers the datacenter. On days when renewable is making more power they throttle back some gas generators.
Solar and wind cannot, today, effectively provide baseline power generation.