well, it was not about the case, but about the thriving service sector in GPs-link, where people are offering the service of formatting word-files for e-book export. Considering that self-publishing is probably in the 20$-wage-range, the authors could easily learn pandoc+git (or just use MS Word the right way), save that money for subsequent books AND (which is the most important thing) should have a workflow in place, where they actually can check for previous version/can edit the published version easily.