At a certain point, it is incumbent on the buyer to do some research and understand something about what they're buying. The availability of these systems is not a secret.
We just put up a Ring doorbell on our house. I know that making the (surveillance!?!) video available to my phone requires something be stored somewhere and transmitted over some network. Storage and transmittal mean other people will have it at some point. Should I be surprised or offended about that at some point in the future? Or offended that after some trial period I may have to pay somebody for that service?