This alone would suggest that one person will not have a monopoly on every sort of healing that is necessary. And it suggests that there will be many times when a person with some gifts to heal will not be able to heal. This was Paul's experience. Sometimes Paul was given gifts of healings and sometimes he wasn't. God is sovereign in this affair.
Nothing is mechanical or automatic.
He is sovereign and can give or withhold a gift of healing whenever he deems best. Finally, this implies that we may rightly seek for gifts of healings. This is implied in the pursuit of love and compassion. Praying for healing is only one way to show love to someone. But it is one way.