No one is going to post news/articles here and then discuss them as they would in a regular post. It won’t get bumped up on the subscribed page if something interesting happens. Most of the comments here are going be about the megathread itself.
So this is effectively banning all the discussion concerning all of his companies. Which might be something you want to do, every community can decide for itself what kind of stuff they want to forbid after all. But I feel like it should be said directly, not via making a catch-all megathread.