Neither did the data centers. Datacenters use less than 5% of US electricity.
I've only heard about datacenter protests in the past 2 years. So perhaps what the authors warned about is happening now?
That article is two years out of date, and looking at nationwide electricity usage doesn't account for the local impacts of these data centers.
(* nb4 "it's summer": talking about price per kWhr)
Because... that's not how prices work. And certainly not energy prices, which have both significant capex requirements, spot-market pricing dynamics, and capacity headroom requirements.