TVs are better and cheaper than 10 years ago. Groceries are worse and more expensive than 10 years ago. Same economy. Same decade. What explains the difference?

You're seriously comparing electronics with groceries? That's an apple and orange comparison if I ever saw one. In the electronics industry you can continue to make efficiencies to lower the cost and volume produced is a very important part of that. They are always working at finding less expensive components as well. Those types of options don't work with farming. You buy cheaper fertilizer you end up with less yield, so no efficiency is achieved there. You can't create a machine yourself that would lower harvesting costs, so they are what they are. I could go on, but the point is they are not the same.