agree. like you imply, too many people rely heavily on their providers for business critical things like backups and redundancy. while generally big providers to a good job at this (and aws certainly does a good job at this), it does not mean there is a guarantee of any kind failures won't ever occur. thus the need to heavily invest in failure resistant technologies upon this borrowed infrastructure is arguably more important than picking 'the best' provider for the job.

I would like to note that the response time suggested by the tweet is a bit bad, 4 days to realise something and send out response / alerts to customers is a bit slow even for amazon. But then again, everything goes slower for bigger things, and amazon is quite big i'd say. not sure what the SLA response time to such an incident is, so it might be within agreed times...