It would appear that whomever they are, they're ignorant enough to believe that taking a video camera removes the video evidence of the crime.
LE ought to be able to get the video from the security company's standalone server and be on their trail by, right about now actually.
(Not to mention whatever other cameras were on the property, but hidden. Like in the parking lot...)
sounds like someone may have known what to take. I hope you’re right but something sounds off. more info needed
If someone had inside knowledge, they may have known the camera was storing video directly to an SD card in the camera. The risk of such a method.
Your scenario depends upon the equipment used.
You are assuming the camera was wifi connected and not a stand alone system in a rural area.
A safer bet is that it was someone familiar to them and knew there was inadequate security.