> I don't care who does the calculation and how many nines they come up with - if you load FreeBSD on two bare metal servers and put them in two different datacenters and run them with any kind of conservative and cautious sysadminning you'll have a better solution. Yes, it will be more expensive.[1][2]

Nonsense. It's very easy to have that kind of setup fail - remove one from the load balancer, take it down for maintenance, whoops we removed the wrong one from the load balancer. I've been in similar-sized companies using dedicated servers or AWS, so I've seen both sides. It's like how people feel safer when driving themselves than when being driven by a professional, even though a professional is overwhelmingly likely to be a better driver - everyone thinks "oh, there's no way I'd make that kind of mistake".

It is very easy to overengineer "high availability" systems - I certainly think things like STONITH and dedicated control planes are more trouble than they're worth, and running a system that you don't understand is a recipe for failure. But I'll take FreeBSD on a basic AWS setup - four EC2 nodes (multiple AZs), and an ELB - over bare metal any day. Physical server maintenance is not where I have a competitive advantage, and would mean more complexity to understand, not less.