"The world doesn't run on systemd, and it isn't a "just works" thing in the slightest."
Redhat are betting their particular farm on systemd in RHEL7, and Debian (hence recent Ubuntu releases building to the 16.04 LTS) has adopted the suite.
Is the point you are making above based on the percentage of servers running earlier supported Linux implementations or on the existence of alternatives such as the BSDs?