The more people use the web, the more Google gains. It's really as simple as that. People switching their media consumption from traditional media (TV and dead tree) to the web is what makes Google more money.
How? Advertising budgets follow those eyes. Google is a nobody in TV ads, so doesn't get any part from the (big) money advertisers are currently spending there. If these would switch to targeting the web (where Google is the dominant actor), chances are that huge chunks of those ad budgets will be inserted into Google's giant ad placement machine.
How? Advertising budgets follow those eyes. Google is a nobody in TV ads, so doesn't get any part from the (big) money advertisers are currently spending there. If these would switch to targeting the web (where Google is the dominant actor), chances are that huge chunks of those ad budgets will be inserted into Google's giant ad placement machine.