My analogy wasn’t saying it’s niche. It was comparing the difficulty. And yes, there are trained people (I’m one of them ;) ) but that doesn’t make it easy, cheap, nor even less error prone than using cloud services. Which was my point.
Also the reasons those companies usually run their own infra is historically down to legislation more than preference. At least that’s been the case with almost all of the companies I’ve built on prem HA systems for.
