Recommended reading: The Space Merchants, by Frederick Pohl (with
sequel, The Merchants' War, by Pohl and Kornbluth), featuring a world
in which advertising covers *everything*. (But there's a certain
aspect of "plus ca change" here. Around Boston, there's a species of
Fenway Park traditionalist that is whining about the increasing amount
of advertising within the park. Yet old photos confirm that the left
field wall, a/k/a the "green monster", wasn't always green --- in the
'30s, it was covered with billboards).