I would like to see them design the smart door bell to install wirelessly
The Ring Doorbell has an internal rechargeable 5,200 mAh internal battery, so you can install it for completely wireless operation if you want to.
, use a regular door bell (small rectangular box with a button in the middle) that has absolutely no size differences or colors or logos to give it away, put the microphone on the bottom of the box out of sight and put the camera where the peep hole is on the door (you replace the peep hole as part of the installation process). Have it work on z-wave or Zigbee and capable of operating like a normal door bell as well as how the "Ring" doorbell works with the camera and microphone with text alerts or notification and the app that opens to view the camera (and opens the microphone connection) if you click on the text/notification alert.
Manufacturers can certainly cram a lot of electronics functionality into some very small packaging these days, but putting all of that stuff into things as small as ordinary doorbell buttons and peepholes...plus the batteries required to power them...is asking a bit much. As for normal doorbell functionality, there's an optional wireless "chime" for $30 that you can plug into the wall inside, and that the Ring will activate when someone presses the button.
Video/audio files captured in the cloud or saved on a local drive configured by the user. For that I would pay the $200 as long as there were no recurring monthly charges unless you wanted lots of cloud storage capability.
I don't know about the other manufacturers, but you can get optional cloud storage for the Ring for $3/month or $30/year after a 30-day free trial. Not quite free, but at ~8 cents/day it's close enough.