Hmmm. Maybe not. Other nations have drones too, you know. Enough people are aware that billionaires and their greed are the biggest reason we're in this fix. They're all gonna be a target. Those yachts aren't military craft that can withstand a missile attack from a drone.
It's not inconceivable a smaller nation with some military capabilities could fall to a group set on revenge politics, especially toward those billionaires who have owned or vested interest in companies that have degeades their local environments and impoverished them.
Kill the ones who killed you before to slip away from your mortal wounds.
Also, they're gonna have to put in for supplies sooner or later.
This is like those bunkers they're so proud of. It's a fantasy based on hubris. At some point, there will be no safe place on earth for them any more than there will be for anyone else. But they'll be specifically targeted for what they've done.