I don't believe that was the intent. If you look at the text it's more focused on the unique software that goes into delivering the service itself ... but since the goal of the SSPL was in many ways to reduce ambiguity compared to the AGPL, I think this perspective should be reflected upon and perhaps incorporated into a future version of the SSPL.
Let's say you deploy a work queue service backed by Redis, with authz/n delegated to Azure AD. You would require a commercial license since you can't publish Azure AD?
Taking an established open-source project with a healthy ecosystem and community and making it proprietary overnight is already destroying their community.