I disagree that some products don’t decline, every product has a life cycle as mentioned by Dr. Simon and hence there is a decline in the sale of the product once a good alternative comes in the picture.
In this case, sutures have been used for a long long time, now we have biodegradable sutures in the market that is widely used. Recently a company called Zipline Medical have come up with a suture-like alternative for small wounds so there you go an alternative to sutures have been found.