As far as biases go, preferring to pay for things that have a demonstrable effect is a pretty good one, especially for startups that generally don't have the resources to waste on a large number of failed initiatives. Sure if you have some incite that gives you a better than normal chance of getting a very high ROI on a creative initiative, then go for it, that's what startups are for. But if you don't have any special incite, stick with what has been shown to be effective, and avoid things like Facebook advertising which appear to give low or negative ROI in the typical case.
Digital Ocean is a good example, I've read good and bad stories, mostly good and they had an extensive Youtube and Display Campaigns. When it was finally time for me to close a deal with a VPS to replace my old Dreamhost shared server I didn't have to search. I went straight to Digital Ocean.
This is harder to measure, or even impossible when you add the fact that I was probably impacted at least 50 times by passive or active advertisement for them on at least 4 different devices.
Also keep in mind that I was aware of this the whole time, and I smiled every tie I saw a DO ad, because I knew I was probably gonna sign at some point. But most of the time these type of advertisements happen without you even noticing, even if you are in this business.
Companies spend millions in SuperBowl ads, and nobody can click on that, it's impossible to tell how many coca-cola bottles will be sold by that ad and post discussions that it sparked. But they will do it again next year.
Display advertisement is valuable but it's harder to put a price tag. Even if you don't click on the ad in a mobile app it's still valuable. I'd argue that if you make it annoying or if you try to steal a click it's less valuable.
There is a reason this type of publicity is sold by impressions, because that's where the value is, clicks can or cannot happen, that's just a plus you won't get on TV.
not that i dream about clicking it, i'm just surprised that they still hasn't implemented it yet as current TVs are really computers sold/packaged as TVs.