The millions of average Joes will not know about it. And will not care about it. (But a few thousands will.)
If a million of average Joes install a vault, a few big fish can match them with their hundreds, thousands, ten thousands, hundred thousands of vaults, on cheap as dirt custom hardware, probably payed by government grants because “they further the free internet” (of course it’s just their friends giving them free money).
The million average Joes will now know about it and care about it.
You do realize. If just one company starts building custom hardware for this in bulk with lowest sufficient specs for each component, it can be a better and simpler investment than selling VMs to others on expensive computers on complex infrastructure with complex administration requirements?
A Safe Farm would need: a) Power. b) Networking. c) A guy to replace the broken units once a week.
Never before was there a lower barrier of entry for an industrial scale money making machine. It will be very easy for a few big fish to match millions of home users. I may be the first one to try.
Cynical? Maybe. Also: Realistic.