Not sure: the government could just buy Gitea Enterprise license right? And thereby not really run true 'open source' software, but it would support the main development behind Gitea.
There's a batch of dialog that indicates an interest in 'digital sovereignty', so it sounds like they are less interested in being an explicit customer of a given company.
My point was that you don't need to compete with paid features, just please give the developers money to develop the software further (and fix bugs/issues), so e.g. buy some 'enterprise license', even if you don't need it in terms of features.