Theft = taking something that isn't yours, and yes you can take non-physical things. If I copy your term paper and pass it in before you do, you still have you

Theft = taking something that isn't yours, and yes you can take non-physical things. If I copy your term paper and pass it in before you do, you still have your term paper right? If you work and I don't pay you, you still have whatever you had before Right?