And they have a lot of the supporting facilities and infrastructure you need in order to run a medical facility (kitchen, laundry, plumbing and locally controll

And they have a lot of the supporting facilities and infrastructure you need in order to run a medical facility (kitchen, laundry, plumbing and locally controllable HVAC to every room, etc). It's way easier to rip out carpet than it is to add all that stuff to containers. If you wanted to have cheap and easily deliverable ICUs you're probably better starting off with RVs since those are already designed around all the stuff you need to make a habitable space. Containers are great for transporting many at a time over a long distance because they stack and are also designed to facilitate fast and easy inter-modal handling (which is why the military uses them for certain facilities). Once a containers are within a few hundred miles of its destination they tend to move one (40+ft) or two (20-25ft pup trailers) at a time by truck which is the same method of transportation used for RVs (one behind a small truck or two on a flat bed behind a larger truck). Unless someone is assembling container ICUs in massive volume and shipping them across an ocean or rail transporting them across a continent I would be very, very surprised if the extra resources required to convert and ship containers to hospital rooms is lesser than the effort required to convert (and ship if applicable) existing hotels, RVs or any other structure already equipped for living in into hospital rooms.