Nationalize new browsers and OSes' development, or subsidize them. Governments do it with things like energy, space tech aviation and even telecom, but surprisingly not their software foundation.

I guess the French would be in a position to do so.

They've already adopted some infrastructure software projects into their governmental operations, not only using them, but also participating and maintaining them.

They also have many initiatives mandating the use of open source where applicable, and also suggestions of liability for closed source software by law. Harr! Unheard of! Those naughty Gauls!

cough Mozilla is dead in the water cough

The mozilla Foundation doesn't provide their browser, the mozilla for-profit subsidiary corporation does.