Commercial construction uses a very different philosophy than modular construction. Modular construction uses boxes whose size is constrained by the highway system, and works best when all the boxes are the same. Commercial construction treats the whole building as a single structural box, and then the walls can be non-structural and easily moved around as demands and tenants change. Reconciling those two ideas is hard, since commercial tenants like that flexibility.

These videos of fast-builds are only for commercial buildings that are inherently and permanently modular, like hotels.