Your examples describe two entirely different systems. The failover of a software product is drastically different from the failover of a power system. Trying to map everything back to a common best practice under the category of "risk" seems like it would miss out on important intricacies.
Risk management is about determining how to identify risks, as such, it is applicable everywhere. However, much like security is applicable everywhere, securing Fort Knox is a very different endeavor than securing a web site.
