1. Classic Structure
It is a collection of marketing entities to assist targeting. These may be advertisers etc but they know the customer only in aggregate.
2. Econ 101
Classical economics states that there exists a supply and demand curve and equilibrium is where they meet. It works for the classic model.
3. Social Media Paradigm
4. Econ 202
Social media by its targeting moves the demand curve increasing the sellers price and hopefully profit.
5. Now let us start to manipulate these drawings:
Step 1 is to linearize:
Step 2 is to aggregate:
Step 3 is to combine:
Step 4 is to simplify!
Voila, the social media is the seller and they fit all the old antitrust paradigms! Go get them boys and girls!