Investiment banks employ invesiment bankers who only have the purpose to count beans, or in this case soccer balls. Those of us that know a little about the game know that there is only one ball on the field at a time, but like the soccer refs these invesiment bankers easily lose track and foul up everything, unfortunately investment bankers aren't much better in the financial field.
Some publishers still pay for the eyeballs. A lot of people block ads and JavaSscript just because it slows down what they want, content. I don't want to wait for 1.8MB of ads for 20kb of text.