>I’m still confused as to which “market” is harmed: advertisers? Facebook users? other social networks? Even with scare quotes it's not a multiple: the social

>I’m still confused as to which “market” is harmed: advertisers? Facebook users? other social networks? Even with scare quotes it's not a multiple: the social network of Facebook users is an advertising market. You don't have to be a snot-nosed growth hacker to see that FB has a monopoly position in advertising. Here's a test: does FB have any reason to care about the quality of whatever is being advertised in any one ad? Where are you going to advertise if FB keeps putting your ads for your doctor's office next to ones for a child-rape rock opera and/or "COVID-19 is a hoax" seminars? What is your recourse, switching your advertising to Parler and LinkedIn? NYTimes dot com? The 72 next most popular social networking sites around the world? Surely VKontakte runs a clean house. Again, look at railroads. In the Trust era, trains were not the product, were not the market. Transportation was. Here's a nice little rundown: https://twitter.com/jason_kint/status/1336813617736507397 https://twitter.com/jason_kint/status/1336813617736507397