Doesn't this happen in cycles? A specialized hardware appears, then it gets integrated into processor to make way for an even more specialized variant of the th

Doesn't this happen in cycles? A specialized hardware appears, then it gets integrated into processor to make way for an even more specialized variant of the thing, rinse and repeat. This external thing doesn't have to be "more powerful" per se. So, E cores are lower power helpers which are implemented back into the CPU in a slightly altered form. Who or which prevents them from being dedicated to processing a network stream or just handling network thread of a service, making them "efficient accelerators" in a sense?