The $120,000 price tag on that artwork involving a banana taped to a wall had almost zero to do with the amount of labor or materials that went into it. Its value was based on subjective valuations specific to certain buyers.
If this data is correct, then the anecdotal evidence just doesn't add up, and it's simply not the case that people don't have time to do anything other than work, eat some fast food, and then do it all over again.
Advocates for "blue laws" want to impose more laws on shopkeepers. These moral crusaders should instead start by setting a good example, and stop watching football games, ordering pizzas, or filling up on gas on Sunday.