in my view this is good for the Crypto-currency world. Most scam projects coming by advertisements , so the people caught . after the ban definitely the users willing to go Ranked websites. As an example if you want to invest ICO , definitely now you check with a Ranked websites like ICO bench , ICO drops etc.
NOw filtered the scams, anyway this is good action. this ban means they indirectly supporting the Crypto currency future
ICO needs these very popular sites because they will help their projects to be more known in the whole wide world thru advertising because of the huge numbers of people who visited these sites everyday but the good thing in FB still they will help to advertise the ICO as long as they are legit and will pay the advertising services. For the google, we will just wait for their future announcement.