Easier than that, infractions go against the driver, not the registered owner (traffic infractions in California are criminal violations, not civil). The registered owner has no obligation other than proving that they weren't the driver, including telling police who exactly was driving.
I might be misreading what you wrote. You're saying that register owner (company) have no obligation to tell police who was driving, correct? If that is what you are saying then it's basically why i said they usually do not send ticket to the company being judge just dismiss them.