They are probably lying about their partnerships so they can attract more clients and seem more legitimate, cloud mining has never being profitable and from the beginning it has been a scam, just think about this if you had miners in your home and you could obtain profits with them will you waste your time trying to sell your hash rate? No, that only adds complexity to an operation that is already profitable, so we can conclude that cloud mining is only offered by those which cannot get profits with their mining equipment or scammers.