I was from private about 10years and switched to govtech.
Not really clicks with the culture, people and processes.
From my current team history, promotion and pay increment is too little compared to private.
The skills set is only applicable to current department. Not valuable to your portfolio. Basically people just get some tasks and making sure you are busy and hit the kpi.
However there are many folks stay put because
1. Comfortable with small gang of friends.
2. Not updated skills set. Doubt their resume will be selected if want to try private.
3. Plan to repeat doing same tasks till retire.
4. It is rare that junior talented can replace senior old folks. So likely people already secured the seat as if you do not leave then nobody will kick you out.

If you are ok with 1,2,3,4 then gov sector definatelt suit you.