I don't think you understand how copyright works.

Copyright can only deny the right to make copies.

If someone spends years using your software and they have learned a mental model of how your software works, they can build an exact replica and there is nothing you can do about that since there is no copy you can sue over. Said user is also allowed to use AI tools to aid in the process.

What you want is an EULA, which is a contract users explicitly have to agree with. A license file only grants access or the right to copy, it doesn't affect usage of your software.