[yndoendo]

Are there any such systems for general users that don't want to manage or maintain such systems?

Alternatives really need to be for the masses that have little Knowles in server hosting.

This is one reason I invest in Linux Smartphone company's that are work towards a clean solution for the masses. Daily drivers that are satisfactory for us build the stepping stones to walk to the alternative.

[Cyph0n]

Home Assistant has the plug and play Green box: https://www.home-assistant.io/green/

Hubitat is a different player in this space: https://hubitat.com/

[cmorgan31]

UniFi is simple to keep running and updated. It’s mostly plug and play as long as you have Ethernet lines. You sometimes have to hit update in the iPhone app.