To add to what Brad said about the internet going down, it's not even just a service disruption that can kill the recording - it could be *any* component in the line between the camera and the internet.

I have a Ring at the office in addition to an on-site NVR, and the other day I got a notification that the NVR was offline. I checked the Ring app, and it was offline too. So I went over to the office and the NVR and the Ring were still on, but the router power supply had died. The router itself ended up being fine, but the stupid power supply had died, and so there goes any remote access/recording.

So if a customer wants *a* camera, that's fine, they can get whatever. But if they're asking for more than, say, four? No way I'd want cloud based recording.