On this basis, any transactions, of any nature which come with an Implied contract acceptance are going to be superseded by words which enable get-out-of-jail-free for all parent, associated, restructured companies, forever.
Watch out when you sign the hotel bill. You just promised to give your body on death to the parent company's medical school.
I doubt it's that simple but you would hope the justice system is going to tear this legal theory a new exit hole and not wash their hands first. Specificity is everything in a contract. Sweeping terms, perpetual licence would be a nightmare.
(Not a lawyer, which will be obvious)