Uhhh, I did not ask whether "one" would expect it or not. I asked whether "you" expect it or not. Given the fact that you are mollycoddling large companies, justifying mistakes just based on their size, handling them with kid gloves, forgiving them for a lack of any attempt to improve themselves - you, specifically you, must treat Pfizer and McGraw Hill as less reliable than their much smaller competitors. If not, why not ?
As far as I am concerned, I've worked at multiple Fortune 100 companies where I was in charge of processes which ensure that human errors in my team do not become company errors. The concept of "checks and balances", automation etc. So I'd keep myself out of it.