We've almost completed our move from the highly resilient in depth systems of the 60's and 70's to highly efficient but low resilience modern world. And I don't mean just in commercial transactions. Accounting, energy infrastructure, deliveries, stock control, telecoms, manufacturing the list is endless. There maybe standalone PLC's and DCS systems that can be ringfenced but often the supporting systems are dependent on highly interconnected systems that can go down just like today.
it all depends on what service you are prepared to pay for...
working in the selector, I can reassure you that we check, double check and triple check everything before mulitple testings... 90% of my role is paper work. a 5 min task in another company takes me days if not weeks to get it cleared.
but those things costs; if you bank is offering higher interest rates, insurance is super cheap, etc.. You need to think where the savings are coming from.
Our team is very small in size but very expensive in cost.. questions are always asked why we are around by newer directors/chiefs, then other C-level managers tell them to shut up as they been though the process of looking to what we actually do.
Just a shame we can't have more staff.