SSO is such a blessing when used inside companies. Who the hell wants to manage acccounts/passwords in every webapp? Absolutely nobody once they get used to SSO.
it's amazing how many companies do not go in for SSO though, because it is often the "extremely expensive" tier. I used to work for Ubisoft, a 20,000+ person company, and SSO was used for almost nothing because it was considered far too costly. conversely: I worked for a Tencent owned studio recently and they used SSO for everything, it was amazing, until the Okta breach (and response, which is worse than the breach…
At work we use PingID which is not very expensive compared to industry standard ones like Okta. But it's very poor in my opinion. It seems they're always lagging years behind competitors in terms of features.