Today, you just put up with inferior tomatoes in the winter and be annoyed about it.
The logistical complications of worldwide produce supply chains and your local supermarkets are really, really nuts.
And the fresh fruit and veggies are crazy. Blueberries in December? How and why are we doing that :)
Even in rural and developing regions, there are grocery stores, just not as fancy. I tried to find numbers, but it was hard to find the right source for that.
Anyone living in an urban area would have access and that is 60% of the global population. Plus, rural areas in the USA, Canada, Europe, Mexico, etc etc have access to one.
Only about 25% of the population are engaged in subsistence farming at this point.