Advertisers can choose where to spend the ad bucks, based on absolutely any criteria, how is this lawsuit even a thing?
I would bet that law firms love fragile rich people. "Sure, we'll write up that lawsuit for you, bill coming soon!"
Note that Musk deliberately filed this in a federal district court known for its extreme far-right rulings.
Expect the district court judge to play along. It's possible the 5th Circuit may go along with this farce as well (several of the panels would gladly give Musk whatever he wants, but if it goes to an en banc review it's unlikely the full bench would agree), but even the current SCOTUS wouldn't rule in Musk's favor.
Refusal to Deal is generally something like trying to force a supplier to only work with you and not your competitor. This is nothing like that. Also good luck getting new companies to advertise with you now that they know you sue people who stop.
[dupe] Some more discussion: https://news.ycombinator.com/item?id=41173217
Wow, that's crazy-town even for Musk. They keep using the term "illegal" to refer to everyone's right to decide who they will or won't do business with. I'm eagerly anticipating hearing what law(s) Musk thinks were broken.
This looks for all the world like a desperation move.