This is enough money to get them a seat at the table which can be important in itself.
The best case scenario is that they realize they are incompatible with Nintendo's vision and they sell off their shares at some point. The worst case scenario is that Furukawa actually listens to them. Nintendo's strength is not in digital or online anything. Nintendo's strengths are 1) making games, 2) making hardware to specifically play games (like the Wii remote), and 3) local multiplayer.
I don't have a sense for Furukawa yet, but he has made mention of expanding into online and mobile gaming more, which is troubling. But I won't really have a good sense about him until their next console is announced. That is when we'll see the direction he really wants for the company. He inherited the CEO position after the Switch already launched, so he is excuting someone else's vision at the moment (Iwata's). But when we see the next system, then we'll know if any of this digital focus has taken hold.