I have never in my life fucked with these things except page-load passively. Never placed one, never turned one on, never had a reason to click one. But I don't

I have never in my life fucked with these things except page-load passively. Never placed one, never turned one on, never had a reason to click one. But I don't drink Coca-Cola either. Do these things really make the world go round? I mean, really? I mean do corporate bottom lines really depend on this shit? Or is it just that they absolutely have to wring every possible percentage point?