I'm looking for an English adjective, idiom, phrase, or principle to describe complex tasks/jobs/processes/things where the baseline is "perfection". And where people only notice the importance of the task/job/process/thing when it doesn't work.
An example of this is food/goods delivery. When people order food or goods online, they expect them to arrive on time at their door. Everything below this bar makes people notice or get frustrated, even though this is a complex process where a lot of things can go wrong.
Another example is salary payments. Every US employee expects their employer to pay their salaries on the 15th and 1st of the month, the full amount. It is a complex process that involves a lot of prerequisites (the balance sheet is balanced, the bank transfer worked, ...)
In the industrialized world, you can also have telecommunication, internet services, water, electricity, and public transport... For all human air, etc. You get the idea.
What is the name/idiom/phrase for these types of things?