Copies are made and that is good. Each copy has some changes and different rout of development.
That has been the case of the so many PC typs in the PC revolution, the so many internet sites doing the same thing in the bubble, the so many social networks copying from one another (YASNS), smartphone apps, etc.
It usually challenges the leader, and steers innovation.
It is a good thing for the entire ecosystem... and definitely for counterparty.
would you rather counterparty being an obscure platform that no-one takes interest in its development? Of-course not....