clearly the ticket sales in megalopolis are a result both of the band「s increased popularity and of the advertising campaign run in megalopolis by the ad lib advertising agency.
thus, in order to ensure that the band」s success in megalopolis is repeated across the country, the band should hire ad lib to duplicate the megalopolis ad campaign on a nationwide scale.
add to this the fact that director stanley kubrick allowed him to ad lib about 50% of his lines, which kubrick only allowed for one other actor in history, peter sellers.
this has been disputed as being a genuine ad lib or not as dustin hoffman (who plays ‘ratso’ rizzo) claims he made it up, and the director claims it was always in the script.