Wasabi and B2 are pretty much the only commercial services which could even attempt to compete on price with something like Sia today (Filecoin and others in the future potentially), but they're only in single DCs and if they lose your data you have no one to go after. In the cryptocurrency-based systems, this is all automated.

For as many incredibly stupid and useless applications of blockchains as there are, this isn't one of them in my opinion. It may not be unique, but it's actually something that could have a competitive edge over a centralized service.

It would be nice to see Sia/Filecoin provide some basic DB metrics like availability, durability, latency, bandwidth... things that any prospective client would absolutely need to know.

You're missing OVH, which has multiple DCs.

Automating the upload to different endpoints is not exactly something exclusive to the blockchain, I already have that with git-annex.

Dropbox got a similar response, no? That it can be replaced by rsync.

The point of the blockchain is to allow me to rent storage space on other people’s computers.