How much of your developer time gets lost to maintaining servers.

I used to think this sort of thing was a valuable use of my time but I now have over $200k in annual revenue and we pay less that $5 a month in raw compute (and that's nearly all S3). My Co-founder is always worried about the cost of our AWS but so far we just haven't witnessed it.

My mandate has always been the price should be able to scale to 0. So no EC2, has made building some longer running tasks a bit more complicated, but that's just because we didn't know how to do it before we started.

You still have to pay your generalists for the time they spend writing and maintaining that bespoke software, and moreover you can hire competent developers to develop using cloud services. There’s no reason to assume that cloud services require incompetent developers, and indeed the cheapest solution is often to employ competent developers to integrate cloud services (whose development and operations costs are shared among all customers, whereas your company is footing the whole bill for your bespoke services).