It turns out, if you build it correctly, you can get BETTER reliability SLAs. There's a company https://www.storj.io/ thats been doing this for years.
People often think of the large cloud providers when they think of data centers -- but their data centers are typically mediocre in terms of redundancy and uptime. Their strategy is generally to have less infrastructure redundancy and rely on software failover... e.g. failover to another AZ