The way it works seems to appeal to "artists" / "creatives". It's pretty simple to get a visual output fast and the always running (hot-reload) aspect makes it easy to iterate on things, tweak some parameter (size, speed, color) and directly see the outcome.
> normal industry projects
It's used quite a lot in the context of trade fairs, not only for touchscreen exhibits but also stage shows. Nice example: https://nsynk.de/work/mercedes-iaa15
There are also totally different kinds of projects/uses, they are just not that well documented. For example I know of a guy that programmed a feeding robot for a fish farm using vvvv.
> nobody famous
There is at least one "famous" user :)
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