Things have changed since 2019. The data center capacity in the Ashburn area has increased significantly since then and much more capacity is currently in development.

Yes, Ashburn is running out of space, so the data center industry is spreading into western Fairfax and northern Prince William Counties (neighboring areas, and PWC particular has lots of infill space available).

That's a link to Ashburn on Google Maps. Every large commercial building in the cluster north of Dulles Airport is a data center (slightly hyperbolic, but drive through and it's a pretty dystopian sight - just one giant windowless concrete box after another). https://www.google.com/maps/@39.0066627,-77.463925,6993m/dat...

But if you play any online games it is a utopia. ~5 ping all day