Then if you believe that you had to follow that logic through and you'd find an immense ammount of things would be immoral, paying for them would be equally immoral as pirating in most cases as most creators don't actually own the copyright of the product you are buying but another company. You`d have to cross out a lot of things out of the list of things that are moral, unless you believe in double standards and consider moral to pay for a record label or a publisher thats going to be taking most if not all of the profits for the creators work because they are the ones that own that ip, if you think in such black and white then paying for it would actually be more immoral as you are actively supporting other people profiting of the creators. If you want to make it cut and dry well there you go.If you believe that creators are entitled to the exclusive ownership of music, writings, artwork, etc. then piracy is immoral. It’s pretty cut and dry.