Ehh... systemd is collaborative project between various distributions including Fedora, openSUSE, Arch Linux, Mageia, Tizen, Mer and various others. It's definetly not designed by one distribution or one company. It has quite a few people developing it too as mentioned in the interview:
The configarion files that systemd uses combined ideas from various distributions and didn't just use the ones that Fedora used before for example.Depends how you count. 15 people have commit access (from a number of backgrounds: Debian folks, community folks, Arch Linux folks, Red Hat folks, even one Canonical guy!). 373 people have contributed patches so far. The biggest part of core development is done by 3 people or so, but there’s a group of 10 people who regularly contribute major new components too. We have at least 5 people now who get paid for upstream systemd work.
And when Arch Linux first introduced it, users found they couldn't actually shut their systems down after the initial systemd migration because, since Fedora requires you to boot from an install CD to do any kind of major upgrade, the systemd developers didn't bother to include any way of upgrading existing init systems for distros that didn't work that way.