And that's a problem in this case, because it's not like any of the predators in ad industry actually dies. They just deliver less money for the parties that employed/contracted them.

Advertising has a different dynamic than regular predation, because in a saturated market, effort of any party serves only to cancel out the efforts of every other party. It's a zero-sum game that can consume near-infinite amount of energy and resources. Now think of all the man hours, electricity, fossil fuels, papers, paints, toxic chemicals and human dignity - all wasted in a zero sum game - and tell me again that advertisers "expending more resources/energy in empire defense" is a good thing. It's the opposite - it'll eat our economy and kill us through side effects of all the resource wastage.