I think you must be in some terrible giant corporate entity where everything sucks all the time.
I bet you that what I told you about this cost/benefit is being done in every startup that YCombinator funds. I bet you they are all choosing product over staff, because their engineering staff is already their ~largest expense. Their engineers might even cost more than the rest of the company combined including executives.
How many companies are choosing SaaS/PaaS/alltheS so their lean team of engineers can scale to millions, instead of hiring a whole team to manage AWS and docker or whatever ops strategy they have.
You might think it's a total fantasy and in the places you work it may be, but I've been in countless meetings with countless executives where the Google Sheet is busted out featuring engineering cost and tool cost and where cost/benefit is aggressively decided.
Spoiler: it's almost always cheaper to use the tool