For example, Amazon already has many full copies

[zakiyatasnim]

Reason 2. You won't get the same efficiency
It is impossible to copy a competitor's website and sit back and receive the same flow of leads as they do. There are several reasons for this:

You can't know if the site is working, what its conversion rate is, and how many targeted applications a competitor is getting from it. It's possible that the company will only get 1-2 clients per month, and it's mainly promoting offline.
You can’t know where your competitor’s traffic comes from. Maybe they create native ads, use context or teasers, or only get organic traffic. You can track this, but you still won’t get the full picture: for example, which source is more effective, which channels the competitor gets the cheapest leads from, which channels generate the biggest deals.
You have a completely different audience. The target audience of two companies may not be exactly the same, even if you are a competitor and sell the same products. Accordingly, what your competitor's audience likes may not appeal to yours.
There are too many factors in the success (or failure) of competitors' websites, and you can't identify them all. Therefore, the effectiveness of your site copied from another company will be different.

But the American company Target decided to copy only senegal number data the review software from Amazon. After the release of the last Harry Potter book, both companies sold about 2 million copies, but Amazon received more than 1,800 reviews, while Target received only 3. Currently, the number of reviews for the book on Amazon is more than 12,000.

Another simplest example is texts. If you copy texts from a competitor’s site, they will be non-unique. But let’s leave SEO aside, let’s first talk about content from the point of view of effectiveness. Firstly, you don’t know whether the texts work on the competitor’s site – they may be there “just for the sake of it”. Secondly, you still have to change something for yourself to reflect your value proposition. Then it’s better to write and test your texts, rather than collecting them, like a constructor, from different sources – that way the conversion will be higher. And if you take all the content from competitors and don’t publish anything else, there will be no organic traffic either.

Copied texts can negatively affect SEO. An old site with many pages in good positions can still copy content and get to the top with them. It is impossible to do the same with a young site.

Reason 3. There may be problems
A competitor whose website, name, design, or any other solution you copied can cause a lot of problems. Especially if they have the rights to it - for example, if the design is copyrighted and there is a contract with the contractor confirming this.