Bernie Stolar was pivitol to Dreamcasts success. His team put together the best launch in US history when Dreamcast debut in 9.9.99. I always wondered how things would of panned out if Bernie was still in charge instead of Peter Moore.
In my opinion, the one common denominator with Sega's struggles has been Sega of Japan. They never understood markets outside of Japan, which is understandable, but always became a massive barrier for any CEO hired for Sega of America. The times they let SoA guide the ship they were super successful, when SoJ took control they tanked each time. Its an ongoing problem even today.