Most designers on the game industry, sound composition, or electronics would be to differ, but maybe only having three industries that embraced visual programming is too niche. :)

Not everything can be made into a one way graph with limited data types. Node graphs work in specific domains because they only have a few data types and don't need to worry much about side effects, ordering, branching, state and IO.

On top of that you also need a good GUI which itself is rare. Houdini has a great interface that is well designed. Touch designer is much more wonky, loose and awkward.