Is creating a project inspired by a successful existing idea, such as language learning centers or websites, and competing with their owners in the job market, considered an infringement on intellectual property, or is the idea considered public domain?

What is forbidden by Islamic law is the transgression against the rights of others, including intellectual rights such as authorship, invention, and innovation. Therefore, it is impermissible to copy books or programs without the permission of their owners. However, benefiting from the ideas of others to establish a website, center, or school that you manage in your own way is not prohibited. This is similar to someone who benefits from a book or lecture to deliver a sermon or lecture of their own.