The telecom providers had argued the rules put them at a competitive disadvantage to online ad giants Google and Facebook,which generally aren’t regulated by the FCC.
Google and Facebook have built huge businesses powered by reams of data they collect about consumers’ online actions, both on their own properties and across the web. That trove of information largely explains their dominance -- combined, they have a roughly 47% share of the global digital ad market, according to eMarketer. – Jack Marshall, Wall Street Journal