Derivative work can be great, sadly lazy derivative work comes off more as theft but in the art world it's a blurry line. [1] [2] [3]

Lazy (creative) work seems of no higher quality than lazy work utilizing premade bits. Bad code made from scratch, a bad song written from scratch, or a bad sample based song...

  Examples of pure sample based musicians:

Kleptones: http://www.kleptones.com/pages/downloads.html

Girltalk: http://illegalart.net/girltalk/shop/index.html

[1] http://99designs.com/designer-blog/2013/04/19/5-famous-copyr...

[2] http://www.theguardian.com/books/2008/feb/09/art

[3] http://www.bloomberg.com/news/articles/2015-06-17/richard-pr...