Should we stop piracy even if there is plagiarism involved?

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Piracy is crime,we all know.But should we really consider it if you solid evidence that the product is not original(in the sense it has been copied).In cases of videos,Movies,especially Music. Pritam is a well known music director in India.He is very popular now.he is the music director for almost all the movies done nowadays. He is a plain copy cat.He has directly copied music and lyrics,we are not talking just 10 or 20 tracks.he has much more on his name. Most of them are direct copy.music is copied,lyrics is written by somebody else.then what does he do???get paid for copy and pasting the tracks?. in such case why should we spend our hard earned money on buying the original when in fact the so called "original" is stolen in the first place?