To be honest, I think Cardano is not mature enough yet to be adopted by governments for key applications. There is still a lot problems to solve, a lot of incoming features and social engineering with an impact that still need to be assessed. POS is kind of new. The governance is still a work in progress.
Today we have big exchanges concentrating more and more of people’s stake, and thus voting power.
A lot will change with the incoming smart contracts, Defi, the Voltaire phase, people’s education…
So it is very good for gouvernements to think about it, or do experimentations. Cardano has all it needs to be the greatest platform of all. But imo, the system is not stable enough yet to run people’s life on it.
From a government point of view, I totally understand the wait and see attitude.
I started a discussion about a current problem, showing that we are not there yet. It is under another thread for those interested: