> You'll say, of course, that advertising is so lucrative because businesses around the world (and therefore the society made up of them) value the extra income

> You'll say, of course, that advertising is so lucrative because businesses around the world (and therefore the society made up of them) value the extra income that advertising provides. You'll say that society as a whole does, in fact, want more, better advertisements. But I suspect that there is a segment of the population just as large that would rather everyone in the advertising industry do something else. Only that segment can't pay. Allow yourself the recursion. They could pay if we valued their work more. Every job is on the market.