This is about land use. Much of the UK is sprawling suburbs built for the car. Halifax has a lovely market and a few beautiful streets. But it's never as busy as the retail parks because barely anyone lives centrally. Once you're locked into the car, you might as well go to the retail park.
The British syndrome, summarised: 78% of us say our high streets are important to us. But only 28% of us actually use their local high street even once a week – and only 53% of people said they used theirs *once a month*. We won't use it, and we won't lose it.