fines should be of magnitude that discourages the behaviour, but should not be so large as to be an instant kill for what could be a legal business if not for the behaviour. there should be a negative reinforcement that provides a window of opportunity to learn and adapt, or else fold up.
The problem is, if a company made 500M from their bad behaviour, and the govt only charged them 300M. The company is not incentivized to not do this behaviour anymore. They made 200M net after the fine!
If they made 500M and the fine is 550M, then they are incentivized. It hurt them 50M to do the bad behaviour.
It's obviously not as simple as I'm making it, because just calculating the money they made from the bad behaviour could be very complicated. but you get the idea.
Why not? A corporate death penalty should absolutely be a thing. If we can have it for people, then we can have it for a business. The problem is that government sucks at doing its own job and the usual punishments are a joke.
I also really don't see the economic harm in killing robocall companies. It seems like a net win to me.
The bigger problem, is that many of these companies are structured in a way that profits get extracted to the owners while liabilities don't. So even if you fine these companies out of existence, you don't necessarily make the practice unprofitable.
This is why we need these fines to also pierce liability limiting corporate structures and why we need laws to allow us to put the people profiting from these illegal acts in jail.