This may not hold across geographic boundaries, which is the real problem. Like between Asia, Europe, and North America. Its not so much an a complete outage problem, as it is about bandwidth dropping very low on occassion.

When you're talking about say, high frequency trading systems, this is a big deal.

And anyone who deploys a service with all their data in a single data center, is a pretty small time player, or they don't need the uptime.