I don't believe that being available 24/7 is practical or cost effective.
Nor is it a necessarily an requirement to maintain a healthy and happy customer base.
Any employee you speak to says "Man, my boss makes millions out of us."
Can I bring forth a "reality check here?" From my experience as a bookkeeper there are "many" times the boss (small to medium company) pays himself less than some of his employees....did you get that comment? The boss is paid "less" than some of his staff.
Stating that a company "should" offer 24 hours service / 7 days a week is ridiculous. Many medium companies could not even to afford to outsource to India let alone at home locally.
Local costs in Australia - Award wages, superannuation, after hours loading rates, work Cover, payroll tax, insurances and in some cases a legal requirement to install security upgrades, telephony upgrades etc.....
In big business after the GFC, this suggestion is also impractical . There is NO need Unless the company gets paid to provide a 24/7 service in a specific field?
Do you as a employee work 24/7? No
So why expect a normal company to do so also?