I agree, I remember reading an article or a comment explaining this phenomenon on HN, with examples. Nevertheless it would be interesting if the idea of digita

I agree, I remember reading an article or a comment explaining this phenomenon on HN, with examples. Nevertheless it would be interesting if the idea of digital ads being ineffective snowballed to the point where it became like a self-fulfilling prophecy, and led to the demise of large companies that we think of as "giants" or "monopolies".