Shipping containers have always fascinated me, going all of the world in all sorts of weather. They can be stacked twenty high on the container ships, and of course sometimes they fall off, like that recent incident with all of the lumber in England.
In recent years, quite a few containers have come home to stay, and it really seems like an excellent idea to me, at a time when so many people have trouble finding housing.
Quite a few student residences have been built in Europe using containers.
They can also be converted into complete homes, cheaper than a mobile home.
And there's nothing stopping from people stacking them into imaginative apartment blocks.
They'll never be luxurious due to the format limitations, but there are times in my life when I would have loved to live in such a thing.
From what I read (there are a lot of sites that talk about this), as long as they are properly insulated, it is no problem. That last photo is from Australia, I think, and they would certainly worry about the heat there.
I don't know if the rail shipping containers are the same size as the maritime ones. If they only use the maritime ones for conversion, I don't think you'll be seeing too many of them in Switzerland no matter what!
Having lived on a 13 meter boat, I can state that a 40 foot container would probably be more comfortable, due to the squared sides. How wide are the containers? That boat had a fiberglass "roof" (floor of the deck above) with teak on the inside & was miserably hot. We insulated it, & it became quite comfortable.
When I first visited Mexico in the early 70s, there were homes all along the railroad track made from abandoned rail cars. It makes so much more sense to recycle these containers than to discard them.
Along the West African coast, many people live in ships that have washed on shore and been abandoned. There is more space than a container, but the ships are almost never flat so it is not convenient. But the residents do not mind. It is a sturdy dwelling.
Those that have already washed up are being collected by beachcombers in the Netherlands, who are picking up mostly plastic toys and sandals. Unfortunately, the flat screen televisions are now worthless.