Copy from others or build something new?

I failed a month ago and my startup went under. This made me think twice about startup ideas.
Which one is right?

  1. Building something new form 0
  2. Copy from others
  3. To my mind, when you copy someone in this way you will reduce risks of failure(if you can not sell it will fail anyway). I analyze startups and I identify their drawbacks. So I build product with high quality.