Circle the wagons
Maybe they just figured out that the world has options that make solutions "fault tolerant" by creating pools of inexpensive computing resources. For example, Hadoop certainly doesn't need continuously operating individual nodes to do its work. Server 2012 changes the game too with resource pools of storage, memory and CPU, oh yeah and those EMC people have grand FT/HA ideas too .. The market for Stratus and its specific ilk is getting smaller and smaller at the current price point. Now, make it real cheap and people might take a look. Or, not.