yea but there is a balance point, if a company invests years and $$$ into R&D on a new gizmo it could go under if "neighbor Joe" copies it out of the gate with almost no initial investment and sells it for half since he has no money to make up.
its a big problem in China (yes even there when they are not ripping our stuff off), some of those vendors won’t even put some of their products in the catalog since they know it will be ripped off by the end of the week.
like mentioned patients do expire so the rest of the market can move in without paying royalties and being that old i am pretty sure you would not have to worry about it.