Tariffs on any game that fails to meet some specific condition that EA does. Pump the stock on EA. Drop stock prices on other companies. Buy them up. Repeat.
Plus you can pull a Facebook/YouTube/Tiktok and use it to push impressionable people politically towards you. Media made for viewing is all a state enterprise at this point. Interactive media (games) have been looked over, but it seems that won't be the case anymore.
The Saudis through the PIF are heavily invested in entertainment brands and sports to distract from the fossil fuels (and worse) that create most of those investment funds.
As to Kushner's-specific role, could just be cynically seen to money itself, as a US-based middleman of the PIF deal trying to take a cut. "Administrators" in these sort of private equity buyouts (leveraged buy outs) can make a lot of fast, stupid cash in a grift that probably should be illegal but still currently is not. (LBOs saddle the company being bought out with a lot of debt to pay the "Administrators" what they think they are worth. That debt often leads to the original company going bankrupt and selling their IP at auction to highest bidder and the "Administrators" also take their cuts of those auctions. It's a corporate ponzi scheme that no matter how many huge companies it takes down like Sears or Little Debbie or MGM or many more we still haven't actually put a law on the books to stop it.)