And it is being funded, for the most part, by private citizens. The majority of citizens and businesses have bought a security/camera setup, fueled by fear. I would bet good money, based on living in a rural area, the the houses with the most cameras per house are located in rural areas, which are the least likely to be hit by crime. I know one neighbor that has ten cameras covering their house inside and out.. Another has fifteen, again inside and out.
I know that these camera companies say that you have to give permission for the police to access your camera, but that is worth less than the paper it's printed on.
The best deterrent to crime is having a big dog, with a big bark in your home. It doesn't have to be a mean dog, just one that barks when a stranger approaches the house. Most criminals don't want to take their chances in having to deal with a big dog. Decades ago I lived in a sketchy part of the city. In the ten years I lived there all of my immediate neighbor, to each side and across the street, were broken into. I had a golden retriever mix, great friendly dog, but one who would bark and growl when anybody approached the house, and I never was the victim of crime.
The security industry is making a fortune on the fear that is pumped into our society, and we're creating a dystopia surveillance society because of it. Don't fall for the fear, get a dog.