I think all the major stores will catch on and get rid of it, at least for some of the time. Some Asda supermarkets have introduced quiet hours when they have no piped music and minimal movement of cages, etc, round the store - it was introduced to help those with autistic children to shop in a less stimulating (and therefore less stressful) environment. It won't be long before those in charge of all the big stores and chains realise how much people like the peace!
..... and of course, no piped music means no performance licences to pay for!!!