Copyright is the creators rights to the product. This gives the creator the sole right of distribution. Without it no artist would be able to recieve pay for any work as anyone could use that work for any purpose once it is published. This also gives the right to the creator to say how it can be distributed and used. This includes but is not limited to the manner in which it is shared or used. This means the creator can state if the item can be shared amongst the community and even if the item can be used for commercial works. In some cases the creator can sell or give away commercial rights to otherwise restricted works to anyone they please, but only the creator can make this determination.