>COVID did not change the economic metrics on that
I disagree with this assertion completely.
You are commenting on an article that illustrates the fallout from COVID having economic consequences that companies are working through. Inflation, higher rates, over-hiring, and I would add over-investment in expensive prime real estate. There have been plenty of reports about companies having to deal with new problems with higher rates necessitating cost cutting. One of which is re-assessing the need for huge amounts of expensive real estate. Facebook and Amazon come to mind in this regard. Others may follow.
The change here is we may be enterning a new economic cycle unlike the last 10 or so years of extremely low interest rates and huge VC money as well as companies running stock buyback and stock compensation schemes to paper over low or no profitability. You can claim the next few years will be like the last few years, I simply disagree with this. So in this light, WFH may be a variable in equation of lowering costs.
>started to limit where they can hire from to only states / nations where they have business in already
Ok, but the dynamic I describe can still be achieved by limiting workforce to US. You can still have a wider pool of workers who want to stay located in lower costs states near their hometowns and families and not need large footprints of expensive real estate.