Nintendo: They called Wii U, not sure why they decided. GCN controller is kinda lack of buttons, but most Nintendo games work anyway, also BUT there's a problem with third parties.(Note: For N64 cartridge, it was SGI helped Nintendo, due to CD technology wasn't capable of Mip-Mapping, that's why they prefered cartridge not just this, fast loading)
Sony: PS3 was overprice & overpowered CPU.
Microsoft: Don Mattrick's plan for Xbox One.
Activision: All main studios must focus on Call of Duty/Skylander, and as for Modern Warfare remasterd, you have to buy Infinite Warfare.
Ubisoft: Downgrade games, rushed development & of course...cinematic 30fps.
Konami: 100% on mobile & pachinko.