A question on TeX.SX about “How is LaTeX used in industry and what are some examples?” has garnered over 6k views since posted yesterday. I had mentioned during my MOSC talk that LaTeX would be very useful in scenarios where some printable content has to be batch-generated or on-the-fly, and now some actual real life examples are given in the answers.
If you read the other answers, you’ll see what and how LaTeX is used in other companies (besides academic publishers). For example, this answer by Peter Flynn:
As a LaTeX consultancy, we have produced classes and styles for many organisations, including companies, government departments, and non-profits. A London auction house uses LaTeX to generate invoices; an electronic systems training company uses LyX and LaTeX to create their course workbooks and white papers; a Dublin printer uses LaTeX for pharmaceutical labelling; a local government organisation uses TeX to generate the Register of Voters; a professional scientific association uses LaTeX for its regular series of technical reports; and of course we use it internally for client reports, newsletters, and invoicing.