Cloud based services... are services. As wonderful as they are (and I do not want to give up such wonderful technology).... cloud, on-line, infrastructure, and even plain old fashion "human services" are dependent on the activity and solvency of others.
No [home automation] man is an island. As many of us painfully had to realize when the old, original X10 had it's problems..... our setups and systems never really stand alone. As we move more towards cloud-based automation.... which I support and believe is all good.. keeping a spare CM15A and computing abilities to set it up (with sufficient back-up). Will remain a part of my HA setup.
I plan to keep moving in the direction of a Raspberry Pi solution to HA as well. A complete set-up could be built for very little. And/or a complete back-up kept tucked away in a shoebox if desired.