In Washington State they go one step further: cameras can only take pictures from the rear. They're not allowed to actually take a picture of the driver.
Yes (same in Ontario, Canada generally). The owner gets the civil fine, but there are no demerit points put on anyone's license.
If one is pulled over for speeding (or anything else), then the officer can identify the driver and they get points as well.
I think points are used as an (dis)incentive for people who would be otherwise be willing to just cut a cheque. Too many points and you start getting insurance problems.