Nike, the late starter struck gold with its “Just Do It” campaign. Launched in 1988, the shoe giant finally had a tagline as good as its shoes. Meanwhile, Adidas, the brand that started and found success long before Nike was even a dream, finds itself as the underdog. The American offices feel like a startup, and is passed between the hands of former Nike execs and European businessmen. What does it take to go from a million-dollar company to a billion-dollar company? Adidas has to find out, and fast.