Nowadays, popularity to share ideas and copy styles in fashion world is mainly one of the most needed choices, because every day the fashion trends changing very fast, so many companies need to get ideas from other companies or even make new trend by making same thing that does other company. I belive that this approach is one of most efficent ways to give consumers what they want in a variable choice, but in another side this action can may lead to change the trends as the sellers want.
Firstly, today the media is most common thing in our daily routine so the new information like new fashion in clothes can travel much faster than before, so that creates fast changing needs. Most of this changes make custumers themselves, like making some action thay create high demanding fashion style across the world, so other companies trying to imitatate this idea and making something that have a same style which gives us a variety of choices for new trending clothes.
But in another hand, this tendency can be controlled like making popular trend in the internet that leads to make their product more valuable and orignal than others. For example we belive that clothes that made by popular brands (such as Gucci or Lui Vuiton e.c.) very valuable and unique thing so if someone have products from other brand with same style we begin to think that he just bought the clothes that had been stolen from original creator. And that creates high presure for newer companies to sell thair products like clothes.
In conclusion, I agree with my both ideas that it is help to create more different choice of clothes that we need, but in side with that it creates high pressure on other sellers too. The best choice is to make your own unquie style or trying to imitate the clothes that become normal in markets.