Sure they aren't, but they don't want it to be a big hassle when it turns out a few years later, they actually need those features.

My employer is okay with paying an extra $10k/mo for stability and predictability.

We don’t assume we are saving money. We are a smallish B2B company. We are far more concerned with being able to scale up when a new client can increase our load (and revenue) noticeably.

The money we save by not having someone babysitting infrastructure and the speed we can move at is well worth it. One client contract basically pays our entire infrastructure bill and then some and we have 30 clients. If we had to hire one Devops person it would be about the same as our yearly bill if not slightly more.