My view is that it’s hard to know whether “karma” has or hasn’t done enough because people have different beliefs about karma in the first place.
If you’re talking about someone who did something wrong, it’s understandable to feel they deserve consequences. But it’s also worth remembering that we rarely know everything happening in another person’s life. Sometimes consequences are visible, sometimes they aren’t, and sometimes they never come in the way we expect.
So I wouldn’t say “karma hasn’t done enough.” I’d say it’s better not to rely on karma as a measure of justice. It’s healthier to let appropriate consequences—whether legal, social, or personal—take their course and focus on moving forward rather than waiting for someone to suffer.