Re: What's the alternative?
Unfortunately it's not really an option for businesses that need safety of support contract, either from Red Hat or Oracle and majority of environments which actually pay sysadmins money do run either RHEL or OL.
So there's no alternative once RHEL6/OL6 are EOL.
There might be an opportunity for Oracle (the only real vendor that has developers and resources required) to create systemd-less variant of OL7 and put the nail in the coffin of RHEL7 while gaining lots of new customers and significantly grow OL install base, but they don't seem interested doing it.