This isn't really how corporations work. That secures the specific teams working on that franchise at most, but it doesn't act as a parachute for the whole company, and really that is reckless as hell conceptually. I work in a nuclear power plant among 4 other plants, if mine is doing poorly and the others are doing amazingly, they are still gonna shut my plant down. This is effectively how all businesses are ran to ensure they are all doing sufficient or growing financially, or at least turning a profit.
Of course, one can argue the morality of it all, but still. Nintendo seems to be one of the few huge companies that sort of does operate that way, but even that isn't without reason. They respect their developers and realize they are vital to keeping their brands powerful, and propping up their entire business, but if Nintendo was no longer a platform holder, they likely would end up having to make decisions like this far more. Simply put, a good platform holder knows you need diversity and portfolio builders to make the best healthy ecosystem you can, but once you're in third party space, it's pure cut throat top money seeking only, which is what we're seeing a lot of recently.