Mohnish Pabrai said in an interview:

“What we are taught is that if you want to start a business, you need to come up with something new, something that hasn't been done before. But the reality is that the world will very easily accept three of the same thing, or five of the same thing. And usually it is an advantage to look at something that already exists and say, can another one of those exist? Or can I take what's there and tweak it a little bit? If you are a great cloner, you will be 90% ahead of the rest of humanity.”