I am constantly amazed that people rely on anyone else's compute infrastructure for things like doorbells, cameras, locks, switches, or sensors (network infrastructure is, at the moment, a seemingly acceptable integration for isolated communication.) There is inevitable over-pricing and capture by these companies; it's in their nature.

Add to this the security and downtime risks, and the equation really doesn't look good. Equipment that is tied to someone else's cloud is an astonishingly bad idea, but everyone has their own immediate (or even long-term) reasons for ignoring advice. "You get what you deserve."