2018-06-26 Wall Street Journal Opinion by Antitrust Lawyer Mr. Epstein
If Google and facebook enter the cryptocurrency or blockchain arena, they are potentially blocking other players. In this case, they are violate the FTC regulations. Google and Facebook argue that too many fake advertisements in cryptocurrency and ICO. However, as the number one and two advertisers, they should make a general rule to avoid fake advertisements, not banning all advertisements.
2018-06-27. Wall Street Journal
Facebook to accept crypto ad