Google announced that starting June, it will ban all crypto related ads. Facebook also recently banned ICO ads on thier platform. two of biggest tech companies: Duopoly. I think this is creating an opportunity for real decentralized platforms for crypto and blockchain related stuff.
I believe that google did not want to engage on cryptocurrency scams because there are some of the ico's who are just scamming their participants and social media's such as facebook are evading this kind of problem.