Buy a piece of software? Since ancient times there's no such thing for mere mortals. Read the EULA. You do not own that software. You've bought a temporary, rat

Buy a piece of software? Since ancient times there's no such thing for mere mortals. Read the EULA. You do not own that software. You've bought a temporary, rather one-sided, and revocable license. You absolutely do not have any right to take it apart or modify it. That's the entire point of free and open source software (note not merely open source).