General

It's a nice idea but no, I don't believe it exists. Too many horrible people in the world living it up all the way until their passing.

Perhaps those horrible people were very good in a previous life.

I dunno if it works all the time, but it definitely worked for me recently.

This guy got me fired from a job last June. He got fired less than a month later, then got another job, and was just fired from that. And his girlfriend left him. So I'd call that satisfying karmic blow-back.

I can't say i believe in some sort of karmic balance, but if you're a dick eventually life will push back when people get tired of putting up with it.
Its surely not balanced, otherwise folks like Trump would be a warning story. some people are just so powerful or terrifying that it never reaches the tipping point

Interesting thought.... Do we live multiple times? And then if a person were really good in one life, why would they be so horrible in another??? That would be a fascinating research project.