Then we have the first patent board established in 1790.

Then all of the federal courts could use the SSO if they wanted. What about when you want to login to request a tour of the capitol, access the library of congress, or book an appointment with your representative.

We have over 300 million people so there will probably be separate offices within some of the departments to handle some of the more common requests. There’s probably going to be a passport office and separate office to handle immigration and visas. Treasury will probably have separate offices to handle accounts payable and tax collection.

Add in miscellaneous things like logins to handle freedom of information requests. Logins to register homestead claims and mining claims in US territories.

My point is that even in the most minimal government only possible in a libertarian’s wet dream, there’s gonna be enough delegate logins that SSO is a good idea.

Just one example. In a country of 3 million people you can probably get away with having one office that handles visa applications and passport applications.

In a country 100x larger, you’d need to hire so many employees for both that each sub department will grow so large that they are effectively independent from each other and have separate physical infrastructure, separate digital infrastructure etc…

Then once you have all these separate sub departments you have sub departments that pop up just to service other sub departments.

It’s just an extension of graph theory. The number of connections between nodes grows non linearly with the number of nodes.

Take any organization. The percentage of support staff vs direct revenue generators increases with the size of the company.

The number of support staff vs front line fighters grows non linearly with the size of the army.