> If you pay for keywords of a rival brand… it is a data driven decision

Right, I think this is easier to quantify. The hard case is advertising on _your own_ name, defensively (to stop others from doing so). I think it is hard to make a truly data driven decision in this case, since you don’t see the clicks you lose. I think you’d have to do a careful A/B test if you want to tease this apart.

> the guys buying the ads are not the brightest on the team

lol, surprise! I run marketing for a small business, I am the guy buying the ads haha. I’m not offended at all, but am a bit surprised the engineer-vs-sales feud is still alive. Fwiw I also do product design! Can’t we all get along?