Sure, except then it's without the actual benefits of a quiet day. The staff at those businesses, delivery drivers and what not are now working Sundays too. Lots of small businesses and self employed are pushed near to the point of no free day, just to compete and stay trading. Early closing day and closed Sunday is a forgotten concept.

There's plenty of families now where both partners getting common free days is a rarity, let alone organising group meets. You don't need a day for grocery shopping - just an hour or so. It's not like we found it difficult, or the public agitated for it before Sunday was added to supermarkets and Primark. It was just a concerted trade push for more commerce. :)