Why are these big name companies still relying on exactly ONE web host? These companies are centralizing failures to just one cloud host. They definitely need t

Why are these big name companies still relying on exactly ONE web host? These companies are centralizing failures to just one cloud host. They definitely need to abstract cloud deployment with something like libcloud and jcloud APIs and make use of multiple cloud deployments on a dime. As for storage, they should have replications set up on other cloud hosts as well.