That answers GP's "how do you drive a container ship over land" but we seem agree that container transport is a solved problem that airships can't meaningfully

That answers GP's "how do you drive a container ship over land" but we seem agree that container transport is a solved problem that airships can't meaningfully contribute to. But there are objects that don't fit the rail profile that still need transportation. And a lot more objects that don't fit that profile, or the more generous limitations of an oversize road load, that could exists if matching overland transportation existed. A lot of technology is severely size-constrained only because roads between factory and deployment site are size constrained. A cargo airship that can take those loads could completely change whole industries.