I appreciate and respect your honesty regarding your real name, but given the world we live in, I would still recommend you hide it here. I still stand corrected.
I really don't see how authoritarian regimes would be affected negatively (for them) by transparency?
Regarding Wikipedia, I think a lot of contributors would hesitate to give their real name. If it was the norm, maybe the usages would be different, but I think I wouldn't have personally contributed if I knew that people I know could find my works there. And I haven't even done anything weird.
For banking, secrecy is a cornerstone of the system, even IRL. What the banks manage to do IRL would still need to be done on the Internet. Public transactions IRL is unthinkable and it would be online