It does not happen today because people fear men and do not want to offend anyone. There is a reason it should happen. It is for the health of the church and for the “hopeful” restoration of the believer caught in such unrepentant sin.
When churchs allow people to walk in open unrepentan sin, and person claims to be a believer, they can infect the church. One must care for that person as well as look after the rest in the flock.