LabView (https://en.wikipedia.org/wiki/LabVIEW) and Simulink (https://en.wikipedia.org/wiki/Simulink) are intended for serious work for scientists and engineers.

There are many visual programming environments targetting different domains: https://en.wikipedia.org/wiki/Visual_programming_language#Li...

The biggest issue is that visual programming environments tend to be domain-specific rather than general purpose. A general purpose visual programming environment would be difficult to build and still be as capable as a software developer using one of the mainstream programming languages with IDE.