The biggest cost for cloud storage services is not disks. Never has been. They're pretty cheap all things told. It's the per rack operational costs that dwarf them. The cost of electricity, cooling etc. You're also paying for the durability and accessibility that is built in to the software. It's why you see, e.g. backblaze obsessing about their server specifications and how many disks they can cram in to the server. Everyone is trying to maximise the rack data density, and trying to tow a really fine line on having just enough compute power in the individual server.
> It's the per rack operational costs that dwarf them. The cost of electricity, cooling etc
Ok lets do some simple math - lets say you have a few racks with 50PB in there, colocated. Power + floor space + remote hands will not cost you more to than 250k/y and that’s being very generous. Dividing by 50PB thats .5c per gig PER YEAR. Can you explain why GCS/S3 charges 50x that not including egress which is also ridiculous?
Also, it’s easy to beat most costs if you get consumer grade hardware and don’t refresh it more than once a decade. I see that often when folks compare costs, but that’s dishonest and just kind of shoots their credibility in the foot.