I'm in my 50s and a huge number of shops I remember from my childhood have gone.
Eg, Richard Shops, Etam, C&A, Freeman, Hardy and Willis, Dixons, Fine Fare, Dewhurst, Athena, and let's not forget the much lamented Woolworth's. But, OTOH, we didn't have Claire's, Zara, Cos, Lidl, Aldi, all the phone shops like EE, 3, Vodaphone, and the coffee shops: Starbuck's, Costa, Nero, Pret.
We're shopping differently, and will almost certainly change again and again over the decades. Some businesses go bust, some adapt (eg Greggs used to be a baker and is now a takeaway outlet), new businesses start, retail jobs move out of town or online - there were no jobs in Amazon warehouses in the 1970s - easing congestion in town centres.
Has the loss of jobs in the shops of my youth meant loss of employment, or have people moved to other jobs? Unemployment in 1978: 5.4%, in 2018: 3.9%. Would people prefer to work in the shops of my youth than where they are today? Would they be better off in terms of money? Or life experience? Who knows?