There are sites selling (if you look hard enough) little brass plates with holes for the bridgepins, and slots for the strings, so that the ball ends of strings sit on the metal plate and do not chew up the wooden innner bridge plate.

Since pretty well all older guitars have got chewed up inner bridge plates and the replacement of an inner bridge plate is a standard and expensive luthier problem, why don't all guitar manufacturers put a little metal plate like that in there anyway?