[davidpardo]

Ok. Let's try some more imaginary maths. If Valencia has five million inhabitants, and one in ten in these, in turn, send one document to the regional government every year, that would be, at a hundred Euro each, about 50M€ going to Microsoft. If the government uses LibreOffice, that's a big saving for the people.

On top of that, I guess most of the 100.000 users at the government -doctors, teachers, judges, clerks...- have never used a pivot table, and won't get those extra 72 seconds per day. This ain't Henry Ford's factory and there are much bigger externalities to take care of before this kind of imaginary optimizations.