Just an assumption: they had relatively large business case for DNS and user-friendly global networking without site-specific configuration in general as they w

Just an assumption: they had relatively large business case for DNS and user-friendly global networking without site-specific configuration in general as they were selling what essentially amounted to free-standing workstations that did not really need centralized infrastructure. As opposed to many other workstation vendors at that time who either didn't care (e.g. Xerox) or assumed that their product would be used en-masses as part of some existing network and centrally managed (e.g. Sun).