@libreoffice This has been the truth in multiple countries for some time, including in Portugal, but the governments don't always follow their own mandates for themselves. In Portugal @ansol monitors violation of this type of mandate for government institutions:

O Regulamento Nacional de Interoperabilidade Digital, publicado como uma Resolução do Conselho de Ministros na sequência da lei 36/2011, deveria ter sido actualizado em 2015, mas a publicação da sua revisão só ocorreu em 2018, e está disponível no Diário da República.
@DiogoConstantino @libreoffice @ansol We’ve seen it happen here in Germany—in Munich, to be exact. For 13 years, the city government had relied on Linux. For 13 years, apart from a few minor issues, there were no complaints. Then a new mayor came along, along with Microsoft and a big black briefcase, promising to move the company’s German headquarters to Munich if the city switched to Windows.
Well, what can I say? Munich is once again in the hands of the rip-off artists from Redmond.