Seems like you'd want to subpoena source code or gmail history or something like that. Not much interesting in an office these days.
Sabu was put under pressure by the FBI, they threatened to place his kids into foster care.
That was legal. Guess what, similar things would be legal in France.
We all forget that money is nice, but nation states have real power. Western liberal democracies just rarely use it.
The same way the president of the USA can order a Drone strike on a Taliban war lord, the president of France could order Musks plane to be escorted to Paris by 3 Fighter jets.
I remember something (probably linked from here), where the essayist was comparing Jack Ma, one of the richest men on earth, and Xi Jinping, a much lower-paid individual.
They indicated that Xi got Ma into a chokehold. I think he "disappeared" Ma for some time. Don't remember exactly how long, but it may have been over a year.