This is true. Construction has had millennia to work out how to best organise its different disciplines, though -- I hope that it won't take software that long, nor that it'll need to be quite as stratified.

Software Engineers are usually quite capable programmers, while construction needs a lot more people _doing_ the construction than working as Civil Engineers, even if Civil Engineers wanted to join in.

That's not quite my point, though: we don't expect physicists to be good at Civil Engineering or construction, and we ought not expect Computer Scientists to be good at Software Engineering or programming. Having some understanding of physics makes a Civil Engineer better at their job, similarly for Computer Science and Software Engineering. And both construction and programming can be undertaken in isolation, but you're unlikely to be successful in your larger project unless you have Civil Engineering or Software Engineering expertise.