It's true. Most projects out there has similar ideas. Which means what? It means that the coin is practically useless or has a chance small as a grain of sand on getting a lot of attention. So, These coins will die basically when it hit the market. So be creative.
The team that makes the project with the same idea is the team that is not creative and they can only make a copy in writing because basically the project does not exist in reality, then obviously the tokens that they give birth will die when in the market including the project will also die, because all people will not believe in the ideas they wake up.