http://awuuwa.i2p/webpages/randomstatementsandarticles.html
Well because if there original proprietor of the chair did attached a piece of paper with such terms onto the chair with tape, you, as the new owner after purchasing that chair, now have the power to invalidate those terms, **because it's your fucking chair**, the previous owner loses power over that chair thus the license is invalid, that's property rights.