Read the following article and answer the question.

The students ended up fighting back and trying to sue the company for copyright infringements upon their own works . Their argument was that the company is profiting by copying students papers onto their servers because they are granted permission . The only reason students give permission is because the schools force them to sign a waiver that allows tunitin.com to do this .

Why would the students feel that a lawsuit over their works was warranted ?
The students wanted to receive payment for their work .