It depends on the probabilistic outcomes and the value of one's output to our society.

For example, on one hand, we should not fail doctors who have made a mistake because we need good doctors to keep doing their job, mostly well. On the other hand, if a doctor is making mistakes over and over again, we should stop them from hurting people.

At the same time, if a restaurant in the neighborhood is failing because of low quality, we should let them fail and let a better restaurant take its place. The downside of letting a restaurant fail is much less than that of a doctor.