People are risking their lives and the lives of others, and a fine is supposed to be the thing that finally gets them to comply?
Any individual infraction might only be a small fine, but it adds points to your license. Collect enough points and you risk license suspension.
I’ve known a couple people who got close to having enough points for license suspension. They drove perfectly for years.
I'm less concerned with a little speeding than I am with blowing through lights and stop signs.
If they run a red light today there is some small chance they will injure/kill someone.
If they run a red light with a camera, there is a 100% chance they will receive a ticket.
The key factor is not the magnitude of the penalty (i.e. whether someone dies or they receive a fine) but the chance that they will encounter the penalty.