What OP basically described is use case for cloud computing and spot markets. Even if only internally. While it could be made open, I don't see any regulatory

What OP basically described is use case for cloud computing and spot markets. Even if only internally. While it could be made open, I don't see any regulatory reason to. We want companies to reduce waste, and it doesn't make sense to require all companies to build public facing cloud, and integrate their flagships into it, just to open it up to their competitors. It would be like telling Apple that its factories reusing scrap aluminum to make iPhone cases is an unfair competitive practice.