Browsing their most recent 10Q[1], it looks like they took a substantial loss on their investment in EntertainmentOne[2]. Which they did with borrowed money, meaning they don't have that much equity to lose. If you look at it from a business line perspective, WotC made 2x the profits of the next biggest, on half the revenue.
My read: management bet the company on Film&TV in 2019, and lost so hard WoTC pays the price.