Projects like Ceph and Minio have existed for years, though?

Beyond that, I just don't understand your point of view at all. Do people unironically think there is some super special dark magic being done in the bowels of Amazon, as opposed to just...code that runs on (virtual and physical) machines? The open source community yielded Linux but it's just sooo impossible for it to yield an object storage service? What a strangely shackled view of the world.