Comment by kube-system

Zero. People who work on ad-tech build ad-tech all day long, that's the entire job.

Seriously, why do you think all of the unquestionable things humanity has built have been built? It's because it's all just part of the job, for somebody.

People working at ad-tech question the things they're building just like the people at McDonalds flipping a burger are questioning the cholesterol levels of their customers. They're not.