Your point is well made... The other thing you need to think about is that all those extra services can come with a reliability cost if your provider is not 100%. Most outages we've encountered have been because the HA infrastructure has decided to have problems rather than the underlying hardware or actual service we need to run.

Having all that "best practice" service is great if it works well, but when it becomes a checkbox on the purchase order then it can cause far more problems than it solves.

I have found that a lot of the push to outsource hosting is simply an attempt to deflect responsibility for problems rather than in expectation of actually providing more reliability.