EDIT: As a reply to this pointed out, these predate the things I claimed were created from NIH syndrome. Please disregard.

Original comment:

They also created their own init system Upstart, only to replace it with systemd later. They have their own source control system, Bazaar.

I really appreciated Ubuntu back in '06 when my laptop's wifi and graphics drivers just worked out of the box. I've used Ubuntu in various forms for a long time. But their management has some serious NIH problems.