I've had tons of ideas/inventions over the years only to see them realized through someone who had the financial resources to promote and mass produce.
To bad for me, but hey, good for them...and I surely wouldn't go round calling them copy cats even if it was my idea a couple years before.
I mean how many different shapes can a bait fish have? You got your rounder fishies and ya got your longer fishies and any combination in between.
I think if we as bait makers copy anything, it's mother nature, not each other.