Governments switching away from Twitter won't suddenly switch to bluesky after already having set up mastodon, and overall similar incentives (mostly the control that comes with self-hosting) exist for corporations though those don't have an incentive to be early adaptors.
Sure there's always going to be a baseline presence of those types of users on basically all platforms having any kind of general reach precisely for general communication but if you are an architect and want to follow the building code department of the ministry of -- who the fuck is responsible for that? dunno, in any case, no you won't do that on bluesky. Why would they want to get burned twice by a platform when some state IT department somewhere runs software they can use for the purpose.