This is like people 100 years ago discussing if mechanical horses should be made of wood or iron.
In the eighties and nineties there was a project at MIT that was called
"Kerberos".
From the wiki-page: "Kerberos /ˈkərbərəs/ is a computer network authentication protocol which works on the basis of 'tickets' to allow nodes communicating over a non-secure network to prove their identity to one another in a secure manner".
The goal is very simple.
When you log into your computer, you type your password once. Your computer talks to a Kerberos-server, and gets a ticket. A ticket is cryptographic information that is used when you authenticate to other computers or services. Suppose you want to log in into a website, cryptographic information is exchanged between your computer, your Kerberos-server, the website and the website's Kerberos-server. All done in an encypted way, that can not be replayed, etc. Basically once logged in, you can access all services you are entitled to, without ever having to retype your password. (Unless specifically asked).
I used to think this was the direction we were moving in. But it turns out we have made zero progress towards better and easier authentication. Microsoft has used Kerberos for their Windows authentication. (And I must admit, I hate Windows authentication. But not because of the underlying architecture, but probably because of the implementation and terrible documentation and UI). But besides Microsoft, I don't think Kerberos didn't go anywhere. And there do not seem to be new projects that have a similar goal. Such a shame.
In the nineties we developed protocols for the Internet.
Protocols that could be used for free by all people in the world, and all companies in the world.
I think this is the basis for the success of the net.
Those days are over.
Nowadays we only see individual companies developing their own service and product.
A few become successful (facebook, twitter). Most fail. But in all cases, the technology and the protocols are owned by individual companies. It might seem cool that you can post a twitter message. But in fact, technology-wise we are regressing back into the dark ages.