"To be a professional chess player is to spend your life living out of suitcases and fighting for control of the d5 square." The reason d5 is more "important" is simply becuase it is a popular square of contestation in the sicilian, arguably the most popular opening in the world."
With Elon purchasing Twitter, we control the D5 square and can set up for end game.
https://qposts.online/?q=D5&s=keyword
Just speculation.
Each platform is stand along and has their own ad contracts with whomever.
Those decisions would be up to the individual businesses to decide.
I could see a race to the bottom where 3 companies bid against each-other for ad money, showing the same exact content.
Ad companies are naturally going to go where the views are. In a perfect world anyways. In this world they will stop advertising because Trump is on the platform so maybe you're right.
Perhaps ads aren't the future, maybe it will be like email where you can choose your own provider and how they offer it.