The sane calculaltion is to make the fine amount equals to (loss to society or profit to corporation) / (chance of getting caught). In some cases, I guess it can be argued that chance of getting caught is so small that the fine should bankrupt someone, but still we should not do it arbitrarily just because the target is a big corporation.

Add a multiplier so that doing the activity is discouraged, not just neutral in terms of expected value.

Surely the punishment should be more than just break even.