You have the law in both Aus and Scandinavia wrong, but that’s been covered.

There are a few reasons not to make fines scale overly aggressively, from the perspective of a western government. They feel capricious and encourage expatriation, they punish (potentially hundreds or thousands of) innocent employees who want financial security, and they incentivize worse behavior. This last principle is counterintuitive but has been repeatedly discovered over the last thousands of years. An immoral person is incentivized to behave by a reasonable grade of punishments and will risk the worst behavior of all punishments are equally deadly or above a certain threshold.

Hopefully that answers your question; this is just an explanation.