You could say Nintendo won their console war with SEGA. But what really happened was SEGA self-sabotaged with the Saturn, lost a significant cut of the market share to Nintendo post-Genesis, and was finished off by up incomer Playstation. Honestly, the Dreamcast had quite a lot going for it, and probably could've sustained SEGA's hardware manufacturing if all they had to worry about was Nintendo. But Sony was out for blood after Nintendo snubbed them; SEGA was kinda an unintended casualty in the whole thing.