Well, one I don't think that the suggestion was that all business should be open only 9-5, Monday through Friday. Clearly that would be a disaster. The idea is that there would be less time that business would be open on on the weekends. I'm from Massachusetts, and I'm only 30, but I clearly remember when I was a kid that a lot of businesses weren't open on Sundays, and of those that were, they were only open limited hours, usually 12-6. A lot of retail stores are still like that, though not all. Supermarkets are open all day, but they pay time and a half to employees regardless of how many other hours a worker has worked (ie, if you only work 15 hours Monday through Saturday, you still get time and a half on Sunday). While I'm sure there are probably people in Massachusetts who are starving for varied reasons, I never met a single person in my childhood who was starving because the grocery stores closed at 9 on weeknights and had limited hours on Sundays.
As for anyone who thinks that anything and everything should be available when they're not working- don't you think that those workers might want to spend time with their families? If kids are at school during the day and you have to work 3-11, when exactly are you supposed to be able to spend time with them? And we wonder why so many terrible things are happening in our society...