I am stuck with your phrasing. Duplication is for me something like cloning or a perfect copy. Which I think is unusual. You will find a chinese phone that looks like an iPhone but is totally different and magnitudes cheaper. What you talk about is probably more like mimicking. Offering something that people are used to to get into the market. But every competitor will eventually look for things to make a brand or product different. What is inevitable, is to diverge from mimicry. So duplicating is an evolutionary process itself.

> Duplication is for me something like cloning or a perfect copy.

That's fair. But if you aren't offering a perfect clone, then you're offering something novel that will 'wow' your customers, no? The market will never take interest in what you are selling if there is no 'wow' factor.

> Which I think is unusual.

You make a fair point that unreasonable terms on intellectual property laws has made it much more unusual than it should be, but isn't unusual historically, and shouldn't be unusual given our system of trade that assumes that clones will be produced. It's the only way most people can participate in the economy (and why they currently feel left out; but that's another topic for another day).