> The internet is designed for redundancy. Wonder why these companies don't have a fail over network. Makes me wonder if cost is factor considering their already massive infra. But a single point of failure ..

Well, Internet was indeed designed for redundancy, and it worked as intended. A no point in time it failed to make you reach the server it was supposed to make you talk to.

What are failing are all the application protocols that are running on top of the network.