[acureau]

I work for a subsidiary of a large industrial equipment manufacturing company, ladder logic is ubiquitous. At least across our partners and the plants we operate within. It's usually written by former electricians called "controls engineers", not software engineers, because it mimics relay diagrams. Controls engineers tend to live completely within the software ecosystem. I've known few who were comfortable with even "structured text" routines. One of the major advantages my company has is that they hire software engineers to produce custom featured HMIs for customers, and train on ladder logic.