Great points. I can imagine where this is going. Say your credit rating is a bit in the grey area, or below 700 even. You walk into any store with cameras, you are instantly identified and your presence is accepted or rejected.
Total corporate control when they control the grocery store purchases, as food becomes more scarce. Green roof technology? growing veggies in the basement along with your "other" plants? You can only save up so many of those MRE's.
Self reliance is the survival of the future, so it seems.