Ease of installation matters most. Your current setup is way beyond what most consumers would bother doing on their own

Plugging this camera into a standard AC outlet and connecting to wifi is easier than it's ever been! I'm guessing you can stick it on with a strong sticker, epoxy, or something similarly easy. ADT built a $7B-valued business predicated on how hard this used to be for consumers to do. Maybe in the future these cameras will be cellular connected so no wifi setup needed.

EDIT: I originally said: "Nest is clearly cloning: https://ring.com/spotlight-cam-wired " But Nest launched first, as commenters point out below. HN crowdsourced knowledge based and fact checking FTW :)

EDIT2: original Nest outdoor cameras had a magnetic attach option -- even easier than the sticker/epoxy/etc path I mentioned.