It's too big to fail in the same way Facebook is. It's inundated with normies. The actual interesting content and creators and worthwhile discussion will find a new home.
My answer to this is always Portal, the first one. It was so unexpected and so, so good. Nothing in gaming before or since has been that magical of an experience for me. Maybe early Pokemon, when my little kid eyes were opening to what gaming could be. But there's just something special about Portal. Such a concise, perfect little game.