It'd be nice if my HOA banned Ring cameras instead of solar

Pffft. Good luck, your neighbors will dismiss you as a crank. Take it from an environmentalist fighting herbicides and the like.

They trust authority.

I’m imagining a series of signs I could walk in front of the cameras….

My experience is that people are conditioned these days to do everything by subscription, even when it provides no additional value.

A CCTV setup likely won’t work for people who just want a video doorbell.

But replacing a Ring with something like a Reolink means they can start with the same service, and over time move to RTSP and a local server as they become more aware of privacy implications and are driven to invest in a contained system.

Likely people will never go CC though, as the entire point for most people is to see what shows up at their door when they’re not at home.