Financially, they saved the company. DC was on the verge of insolvency around 1985. Past that? Yeah, kinda. If their purpose was to organize continuity, then, yes, they failed. If their purpose was to keep the company in business for another decade, then they succeeded. I have no idea what their financial state was circa 2010. But obviously they were under some kind of scrutiny to do such a Hail Mary play. I firmly believe DC would not be here today without COIE. Now, were there steps they could have taken to prevent something like COIE? Sure, but they were about a decade too late. Creatively, it created more problems than it solved but that's more to do with poor planning than the actual idea. Same thing with New 52.