I was talking to an experienced precon engineer (Dave Irvin, Skanska Preconstruction Director) about modular data center construction, and he pointed out Pharmaceuticals have been doing this for a while.
I found this pdf on “why, when, how to benefit from modular projects.”
There an challenges for modular construction.
And some good pictures to give you an idea of scale.
There are 25 slides in the presentation that gives you some good things to think about.