[BradAMyers]

I do try to follow the field. There are lots of modern VPs and some commercial successes. The key "large-scale" VPs are LabView from National Instruments, and OutSystems. There are a lot of what nowadays are called "No Code" or "Low Code" environments, that are mostly VPs as well - see https://en.wikipedia.org/wiki/No-code_development_platform

[contingencies]

LabView seems constrained to the electronics/signals world. For that sort focus-area interface, Blender has a similar 'flow' graph based programming mechanism for its filters. I think this is common in digital audio authoring apps too. I was not aware of OutSystems, it seems like it's basically VB for webapps.