I'm gonna go ahead and assume that to someone who manages petabytes of video content, the importance of backing up video content is more obvious than it is to, say, a non-technical person with a hobby toy unboxing channel. If it was indeed knowledge that is as common and obvious as your attitude suggests, then you probably wouldn't be making any money at all.

Perhaps it's a matter of tone not coming across well through text, but you seem to be bizarrely angry at people on YouTube in general, even more so if they don't back up their video files.