This is an interesting failure because AppleTVs are common in conference rooms (configured in conference room mode!). It wouldn't make sense for such a setup to even have an icloud account associated with it.
Well it makes it trivial to throw a display up on the big screen (either share screen or second display) if you have a mac or idevice. Of course if you can't operate it it's the opposite of trivial.
The worst case is someone from IT uses their own iphone to set it up, then leaves the company. I'm not sure you can even reset to factory settings without talking to the device.
