I think you've put your finger on it: the biggest danger of people copying you is not the competition, but that anger at them will distract you.
As competitors they're not as dangerous as they seem. Copying someone can tell you what to do, but it can't tell you why you're doing it, and you're probably not going to do something well if you don't know why you're doing it.
As competitors they're not as dangerous as they seem. Copying someone can tell you what to do, but it can't tell you why you're doing it, and you're probably not going to do something well if you don't know why you're doing it.