People do want simplicity though. Plug in the device, be able to access it. So you either host some infrastructure it calls back into, so you get around things

People do want simplicity though. Plug in the device, be able to access it. So you either host some infrastructure it calls back into, so you get around things like NAT. Or you punch holes in the network. The same users who want simplicity don't want the complexity of having to remember passwords either...