Some countries use day fines, which are proportional to one’s income: https://en.wikipedia.org/wiki/Day-fine https://en.wikipedia.org/wiki/Day-fine As to why w

Some countries use day fines, which are proportional to one’s income: https://en.wikipedia.org/wiki/Day-fine https://en.wikipedia.org/wiki/Day-fine As to why we don’t switch to a system like that: the people with the power to change it are the ones who benefit from the inequitable status quo.