> I'm puzzled that people are willing buy a computer/OS where (apparently) software can/will fail to launch if some central company server goes down. Maybe I'm just getting this wrong, because I can honestly not quite wrap my head around this. This is such a big no-go, from a systems design point of view.
The answer is pretty simple: these problems are extremely rare, they don't last very long, and they tend to have fairly simple workarounds. You seem to have a principle that any non-zero chance of being affected by a problem of a certain type is a complete deal-breaker, but most people when buying a computer probably just subconsciously estimate the likelihood and impact of this type (and all other types) of problems and weigh that against other unrelated factors like price.
The answer is pretty simple: these problems are extremely rare, they don't last very long, and they tend to have fairly simple workarounds. You seem to have a principle that any non-zero chance of being affected by a problem of a certain type is a complete deal-breaker, but most people when buying a computer probably just subconsciously estimate the likelihood and impact of this type (and all other types) of problems and weigh that against other unrelated factors like price.