I'm sorry to be that person, but if others start pulling their digital ads too, what effects with this have on the whole tech industry. Google and Facebook, who

I'm sorry to be that person, but if others start pulling their digital ads too, what effects with this have on the whole tech industry. Google and Facebook, who both are the face of the industry, would most likely get most of the blow. They both control over 77% of digital ad revenue [1]. Will that scenario only hurt those two and other ad providers in isolation or will investors reconsider tech company stocks as a whole? [1] http://fortune.com/2017/04/26/google-facebook-digital-ads/ http://fortune.com/2017/04/26/google-facebook-digital-ads/