Earlier quoted context omitted.
Those are usually business decisions. Pay an extra $$$ for an outage scenario that occurs once a month, and doesn't materially impact our users? Hell no. Spend XXX developer hours and/or $$$ on hardware to make the site 50% faster, instead of adding new features our users pay for? Hell no. And let's be honest, for touting speed, Google's awfully slow and bloated these days.
A hug of death when your product has peak user interest...doesn't materially impact users? Your users don't care about multi-hour or even multi-day downtimes in "99%" industries like...healthcare and banking? What a perfect demonstration of "Those scenarios are rare if you have gotten used to what 99% can and can't do and therefore just dismiss many solutions without thinking since you know the 99% can't do those thi…
Should ask Reddit.
And yes, it's a sad state of affairs, but an hour of downtime in healthcare isn't all that uncommon. Convincing administrators to ~triple their hosting costs to avoid the occasional outage is pretty hard to do.
I mean, I recently watched a documentary on the 2003 east coast power outage, and one of the primary causes was the single computer in charge of issuing alerts (in an alert-based workflow system) going down.