Why does Pbskids copy Harry Potter!?

In cyberchase theres a girl named Snori snotter who is a wizard and her teachers name is Snublsnore who also is a wizard!In Arthur Purnella and her friend read a book about a wizard boy named Henry (His name sounds like Harry!)In Martha speaks T.D. makes a project about light.In T.D.s progect the villians name is the master of dark of darkness!I mean really cant they make up there own wizard stuff!