This page is unfortunately pure delusion.

I recall early in my career, I was building out a pilot version of a service. Early feedback was that users loved it, and it looked like the tool would be a good way to build our brand, but not a huge money maker. Cost per seat would be about $15/mo and we expected to sell less than 10 seats per customer. SSO integration would be a flat one-time fee in the mid four figures, and my boss laughed when he explained there was more money to be made integrating a mediocre service than selling a perfect solution behind a traditional username and password login.