But the whole point of this approach (as I understand it) is that companies may be able to deliver the ads in the same HTTP response as the content, they may re

But the whole point of this approach (as I understand it) is that companies may be able to deliver the ads in the same HTTP response as the content, they may render the whole page as a <canvas>, they may go to crazy lengths, but by sitting on top of all of that, this software can still block pixels that look like an ad.