You’re not wrong, but there’s unfortunately other issues with trusting any company to be the middleman for your info. As the (numerous, massive, and repeated) data breaches have shown, it only takes one incompetent employee to turn “this one company acts as a middleman for all my ads, and ensures sites still get paid while I don’t get infected or tracked” into “this is the single largest and most invasive data breach I have ever been affected by, because all of my eggs were in a single basket.”