Earlier quoted context omitted.
Are you including the wages of the extra people to support building and managing such services?
extra people? no because I hire generalists actually capable of building software, not overpaid kids only capable of gluing aws services together.
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.