What if I don't want to be "flattered"? I don't really see anything flattering about someone copying one of my ideas when I don't want them to copy it.
Regards your second sentence, that is what I'm saying. A large company that's put lots of resources into something fighting of another company who "stolen" their idea, while tedious, makes some sense. For an individual, I can't see how it's worth the time, stress or money to worry about copyright.