Are there plans to accelerate this as an offering for other providers? I think there's huge benefit in partnering with other providers where you're enabling an agnostic storage layer (any provider that needs a durable object storage system without the complexity of operationalizing one themselves). Congrats, huge Backblaze fan!
Do you have some specific providers you were interested in having connected?
Not off hand, but lots of colleagues in hosting, exchange fabrics, SaaS products, etc and I want to be able to recommend a partnership to them whenever a good fit appears.
We also use Digital Ocean, so they'd be our second choice; however, I doubt they'll be willing to integrate with a direct competitor to their Spaces product.
And the best thing: They don't only focus on price but the quality is great as well.
And for us being a german/european provider is a bonus (GDPR).
I would expect that as this grows (and it will, cheap, reliable storage and all), their network footprint would extend into more facilities (scale is required for this to be cost effective though).
Latency is not an issue until you're pushing GB/sec and crossing an ocean, and even that is feasible (lots of resources at https://es.net/ for that use case).