>>96306329
When does your game take place? During the Time of the Red, Arasaka was forbidden from operating outside of Japan. Taking out almost all of the Arasaka family at once would weaken them even more than they've already been weakened by the 4CW and the ban, and whatever is left of the company after that would probably be further divided by their respective factions.

Yori had his own faction, which was opposed to Saburo and the wider Arasaka organization, so I imagine he'd attempt to wrest control from the other surviving factions and rebuild Arasaka in his own image (assuming he doesn't dissolve it entirely as one final "fuck you" to dear old dad). If successful, he may push to get the ban on Arasaka's international operations lifted much earlier than in the canon timeline, promising to correct his father's mistakes, as well as scouring the world for Saburo loyalists who were operating in secret (maybe even teaming up with Michiko, his niece).