I think if we get to the point that we need professional accounts that will happen. Like, say the US Government finally gets fed up with Twitter and establishes a mastodon so that the Dept of the Interior can talk to the public again. Maybe some people will have official mastodon accounts on that server, and use their real names.
That, and likely Meta users, since everything they own tends to have a deeply-ingrained culture of putting your real name and face all over everything you say and do. It IS going to happen. Pretty sure a couple on kbin already do, and there are more professional instances especially on Mastodon. It's a semi-common thing among eastern artists, from my experience.
Personally, I'm never going to do that and I see no reason it should ever become the norm when we have quite literally a limitless supply even if someone already took your user.
The way I'd imagine official instance accounts working is the governments launching their own .gov instance and restricting accounts to only verified government officials, or corporations doing the same thing on their own official domains. Then their posts are federated to whoever wants to see them (or people can just go to the instance).
I have two accounts, one with my real name, that I want to be tied to my real life identity, and an anonymous one. They are simply for quite different purposes. I very much understand and appreciate the need for privacy by default. But for some stuff I dont mind that its public, and I actually prefer that. Like this post, for example. I'm fine with IRL people knowing some of the stuff I post on the internet. But most certainly I also want privacy, and them not knowing everything.
no idea what happened but a few years ago there was buzz about a company called keebase which was to do identify verification across platforms.
it seems to have something to do with "blockchain" though so I never got much use from it because anything with blockchain smells scammy to me. maybe something like that (without bitcoin) which would be useful.
Depends on the type of Fediverse service. I tended to find people used their real name on Twitter but a pseudonym on Reddit. I expect the same will be true of Mastodon and Kbin respectively.
For professional accounts, I use my real name. But for casual accounts, I generally stick to my current user name. I've got this name on a lot of services so it's easy to find me in other communities. It's basically to allow me to have an identity while protecting my actual identity.