Will Our Abandoned High Streets Return To Nature?

I've been watching with fascination the news that all these high street chains are going into administration or downsizing - Thorntons, Habitat, TJ Hughes, etc. I think we're seeing a major shift in the way we live. In fact, I predict that city centers, to some degree, will move away from commerce and more towards agriculture. I think rising populations and environmental issues will make us seriously rethink food production. We're already starting to see well developed ideas regarding vertical farming and things like that. I wouldn't be surprised if in twenty or thirty years time we see town and city centers becoming producers of and markets for food, with most other commerce being taken care of mainly via the Internet.