What is the "subject matter that DOES APPEAL to a large enough audience"?

Stock Footage rejected and received such a reason "Your submission contained subject matter that does not appeal to a large enough audience or lacks overall commercial utility. "

Here are footage get rejected: https://www.youtube.com/watch?v=fwfpBJ5S7T
https://www.youtube.com/watch?v=T-calKNOkuY

So what is the “subject matter that DOES APPEAL to a large enough audience”?

I am a bit frustrated, because I am sure that many companies want to show happy employees.

Kind Regards.