Earlier quoted context omitted.
Most consumer technology products are much more complicated under the hood than they appear to be to regular consumers. Even most programmers -- who are well aware of the hidden complexity of the products they themselves work on -- usually seem to believe that this must not hold true for the products of other companies. For every feature you're aware of on a random consumer tech product or service, there are probably…
I read somewhere (can't remember where) that Airbnb had a dedicated team of 13 engineers and designers working on the welcome email alone. Getting the CTA "just right" resulted in a huge difference in conversions.
When I was contracting I was always surprised how outwardly similar businesses could have vastly different IT functions. Sometimes an order of magnitude larger for no apparent gain.