I used to write my Computer Science assignments in DocBook (XML). It would amaze the assessor’s when they said they wanted a PDF or PostScript or HTML or whatever and I would spit out a document custom formatted for whichever platform they wanted.
Then they would ask for it in Word DOC and I would be screwed.
That was what I was going to say.
That said, if someone detects some sort of data-mining plagiarism bot sucking down everything on an instance, it can be defederated very quickly.