Antitrust laws only go so far when addressing companies that don't produce any physical goods. It is time to negotiate a new set of rules. Otherwise, our future economy will be dominated by just a few companies.
There are still people out there who think that Amazon is nothing more than an online version of a department store. But it's much more than that: It is a rapidly growing, global internet giant that is changing the way we shop, conquering more and more markets, using Alexa to suck up our personal data straight out of our living rooms and currently seeking access to our front door keys so it can deliver packages even when nobody's home.
Facebook has also long since become much more than a social network for chatting with friends. It is a media company that earns billions in advertising by disseminating content without checking it first.