The pricing is interesting. But, imho, the true benefit of S3 comes with the integrations with lambda, etc. And signed URLs. You can move so much of your client side logic into AWS infrastructure if you build it using their tools. I'm not sure how Wasabi could really integrate with those systems. And, that is where the real cost is, in building and maintaining those systems, so the cost is not in the storage but elsewhere. For a large organization maybe the cost savings would be significant, but I can't imagine they would outweigh the gigantic development and maintenance costs.
After Microsoft's giant OneDrive bait-and-switch a few years ago I am super skeptical of any "too good to be true" storage pricing. I really wonder how it is physically possible to offer these rates.
Contrasting with B2 (the cheapest usable option I know of) it's cheaper, especially if there's a lot of egress. Has anyone used this or have any experience with their support?