Sorry to be confusing:
1. Grandi? Wouldn't it be Emanuele? As show in the picture in your comment.
2. Sorry sorry, so what I've meant is, right now the focus will replace Mussolini with Emanuele, make the non-aligned the leading party and put Italy in the German Faction. But, as you said, you cannot do these focuses if Italy went down the monarchist path. So these two focuses will be blocked, meaning you, as a German player, cannot force Italy to join your faction. What if you get a decision, which you can click and Italy gets an event whether they want to join or not (once the King is firmly in control).
3. What I've meant was, I assumed and you confirmed it, was that if Italy goes democratic or communist the focus will be blocked. So at that point there is no way to put Emanuele in control, if the player desired.
Sorry for the long questions, I figure it is quiet difficult to make all nation's focus trees work with each other.