(1) All free wifi, but "surround" the internet window with adverts and also with the occasional ad popup. Can advertise local business etc. in addition to general adverts.
(2) These days, downloading a movie onto e.g. iPad before boarding a plane is desirable. Apple could allow free internet access at airports so that people can download their movies, then give a share of the profits to the airport. Possible restrictions of e.g. itunes store etc. could apply.