When Nvidia’s CEO Jensen Huang arrived in South Korea, global attention turned to a viral “chimaek” (fried chicken and beer) dinner on October 30, featuring Samsung Chairman Lee Jae-yong and Hyundai Group’s Executive Chair Chung Eui-sun. Yet, the spotlight shifted the following day to SK Group, particularly its memory arm, SK Hynix, which co-headlined a landmark artificial intelligence (AI) infrastructure deal that analysts have called a strategic win. The question hanging over the spontaneous...