Copy - pasting somebody's work is plain stealing, how can you argue with this? He didn't even care to rewrite any parts.
You also copied 99% of it from the bank or somewhere else!!
He's selling the same stuff you do so it's normal.
You seem to worried with competition. I hope you're right

How can you possibly know if I copied this? For your information, no I haven't copied it from anywhere.
Maybe stealing intelectual property is normal in your world but not in real world.
So by following your logic if I'm a musician I can use anybody's tracks/music and paste it to my own album because the real authors are selling the same music? Seriously?
His competition has nothing to do with this. EOT for my side.