Thanks for this. I've been pondering whether the word-processing/QuickBooks strategy is a Nash equilibrium (at least from my admittedly shallow understanding of the term). So lots of people produce documents using Word or LibreOffice - so that's their strategy. Some group of people produce documents using LaTeX. I'm not sure that I see how this is a Nash equilibrium. The LaTeX people in some situations might gain an advantage by switching to the Word strategy for better interoperability. The Word people (in almost all situations) could gain an advantage by switching to the LaTeX strategy for the sake of using a sane paradigm.

Rather the word-processing situation (and likely the QuickBooks situation, though I know much less about accounting software) seems to be something like maximizing the lowering of perceived entry cost (in terms of learning to use the software) over all other factors (with resulting increasing in complexity for more advanced functions and poor flexibility).