This is a pretty neat and concise read on ObjectStorage in-use at BigTech, in case you're interested: https://maisonbisson.com/post/object-storage-prior-art-and-l...
16 9's and aws should easily last as long as the great pyramids without a second worth of outage.
What a joke
It's about losing entire data centers to massive natural disasters once in a century.
There's perhaps the additional asterisk of "and we haven't suffered a catastrophic event that entirely puts us out of business". (Which is maybe only terrorist attacks). Because then you're talking about losing data only when cosmic-ray bitflips happen simultaneously in data centers on different continents, which I'd expect doesn't happen too often.
I'm sure that's okay if you do bulk processing / time-independent analysis, but don't host production assets on wasabi.