Well, the advertisers that have no morals will, naturally. That's why setting up these global spying networks should be made illegal. Or, like what TFA is about, why other parts of the modern technology stack providers should be making a stand that those advertisers are going much too far with much too little upsides.

Don't get me wrong, I'm all for advertising as a business model and it's awesome how advertising on the web has allowed at least some of the content creators on the web to monetize their valuable work. But I'm strongly against the idea that anything in that equation actually depends on the global spy network of the advertisers.