The problem: everything looks 'critical' to folks with a greedy and selfish streak who rise high in management and have their pay tied to the quarterly stock price. That's how we ended up with 24/7 support and "five nines" availability. I'm old enough to remember that banks opened late and closed early, didn't operate on weekends or holidays, and if you didn't get your paycheck cashed by 4pm Friday you were out of luck until Monday at 10am. Grocery stores, malls, and tons of other places opened in the morning and closed at night, and most places didn't open on Sunday at all. Those that did opened later "after church".