Not a bad idea.
I suggest something more effective would be for Trump to order Fed agencies to write very strict privacy regulations. All of these companies make money by stealing your data and selling it. Put that off-limits and they’ll start feeling the pinch quickly.
Both of your ideas are good.
And remove tehir immunity from being sued. And make it so they can only own one platform. Google would have to give up You Tube, Facebook would have to give up Instagram, and so forth. Maybe we could snag one or two.