@blogdiva In the US it was a 1.5 mile walk to our nearest coffee shop, which was the closest shop of any kind - I walked to the cafe only about three times in more than ten years. I was sick of having to get in the car for every single errand.
When I moved back to the UK, I spent three weeks traveling by bus and train to different towns and cities. I found a perfect walkable place with good transport links and a lively high street, but there are an awful lot of towns with abandoned centres and out of town retail parks with limited if any bus services. Away from the major population centres, it would be difficult to cope without a car.
I'm coming up to three years happily car-free, but the UK could still use more effort revitalising towns and improving public transport links.
I spoke to shop owners in my travels, the main problem that they shared was extortionate shop rents. For tax reasons, it seems the property owners literally do not care if the shop is empty or occupied. I suspect also that the "value" of the building is related to the rent cost - whether or not there are tenants.
Another town (Harlow, where I lived as a kid) used to have a thriving shopping centre and a large busy market. The town council decided to use the market stall space rents as a revenue stream. Within a few years the market was gone. Now, the market square with its almost entirely gutted surrounding shops looks like a set from The Walking Dead.