Ken is amassing too much power, and is too smart to lose, but his win will be the total loss of his humanity. I mean, he went full Michael Corleone this week, alienating his children, surging when Roman fell and then putting Roman in his place at the end, hiring his father’s security, bringing Hugo in as a confidant. The truth is what it’s always been - Ken is the only one who really knows business, but his father was an overwhelming force and no one else could flourish in his presence.
Siobhan is Ewan, and ultimately, she won’t have the stomach to take all the power. She’s comfortable and is actually quite good at being next to the most powerful person in the room, but she can’t wield it herself. In 20 years she’ll send her child to work for Ken, and we’ll finally get a fifth season.