Only 3 petabytes? At $0.01/GB/Month, it seems that works out to about $360,000/year in storage costs alone. Cheers, but you're paying for this just as a public service?
There is discount pricing over 100 TB. Its a tech demo so Tadigrade.io sponsors it. Pretty powerful demo on easily storing large amounts of data especially when Github goes down.
It is a tech demo of https://tardigrade.io, because easily storing all of Github certainly gets peoples attention.
Its only expensive because cloud providers overcharge. The listed prices on Tardigrade start at half of Amazon S3, and there are significant discounts if you are storing more than 100 TB.