I think all this is rooted in Yamauchi's approach to 3rd parties, and the stigma just never left...
Nintendo has been doing everything to reverse the trend, from offering a decent console (WiiU), giving it a "core" controller, and securing exclusive core content. True these are small steps, but from this vantage point the task of reversing the stigma seems insurmountable, and maybe even impossible. Maybe Nintendo should offer an official apology to 3rd parties for it's attitude in the past? Idk...







