The upper boundary on the number of connections a personal profile can maintain is 5,000. This restriction is a deliberate design choice, established by the platform to promote a specific type of user interaction and network management. For instance, a profile reaching this limit can no longer accept new friend requests, requiring the user to either remove existing connections or convert the profile into a Facebook Page.
This numerical cap serves several important functions. It encourages users to prioritize meaningful connections and avoid accumulating an unmanageable network of acquaintances. Historically, it has also aided in managing server load and preventing abuse by accounts seeking to rapidly expand their reach for malicious purposes. Furthermore, it pushes individuals and entities with large followings towards using Pages, which offer different tools and functionalities designed for public figures, businesses, and organizations.