Luckily, in a few months, just about the only relevant chain still using PoW will be Bitcoin, and since it is so introduced in the institutions, I don't think governments will even think about locking it.
This doesn't mean governance won't happen, it is just that we will have the power to unite groups of decision-makers and, disband them on the fly, meaning that in order for them to have power, we need to provide it. Stake it, Delegate it, and then they will have to prove they will use it in our best interest - or they will lose the delegation.
It is already happening at a small scale in DAOs, and I believe sooner or later countries and states will slowly move into a liquid democracy where citizens will have a continuous power of decision vote instead of every several year elections.
I haven't heard of liquid democracy before, but since 2017 I have been writing the odd article around similar perhaps. One I was able to find is from 2019:
https://beta.peakd.com/@tarazkp/charging-the-potential-of-proof-of-brain-for-so-much-more