Is it forbidden to create a website similar to another website, even if permission was obtained from its owner, knowing that the owner of the original website did not design it himself but bought it as a ready-made template, and the company owning the template did not authorize the creation of a similar website, despite the existence of other websites offering the same idea (currency conversion) on the internet?

Creating a website similar to another existing one and based on its concept is permissible and does not require permission from its owner. Emulating the idea itself presents no issue and is not among the protected rights of the website owners. What is protected are the rights related to the programming, applications, and similar aspects; therefore, it is not permissible to infringe upon the rights of their owners.