The problem with plagiarism isn't best characterized as some sort of power struggle between teachers and students via bullshit assignments.
The purpose of learning to write is to make yourself a formidable communicator. If you can independently analyze a new topic to learn something new and apply the results of those learnings towards a particular goal, you can be amazingly effective in everything you aim for. But if you plagiarize every assignment you rob yourself of your own training of this critically important competency.
Plagiarizing some work doesn't really hurt the work, it hurts you.
The purpose of learning to write is to make yourself a formidable communicator. If you can independently analyze a new topic to learn something new and apply the results of those learnings towards a particular goal, you can be amazingly effective in everything you aim for. But if you plagiarize every assignment you rob yourself of your own training of this critically important competency.
Plagiarizing some work doesn't really hurt the work, it hurts you.