You have the same access to goods almost anywhere in the US. The basic problem is that certain basic needs (energy, housing, child care) cost 2-3X more in the Bay Area than the Midwest. The only things that isn't the case for are food and transportation, which are slightly more expensive, but not as nearly as much. Transportation may be slightly cheaper out here, but not by a significant margin.

Your idea of a consumption bundle is appealing, but not very practical... you are assuming that there are things that can be adjusted, but for many, that just isn't the case. If you don't have a family, you might be able to get away with living in a smaller place. But if you do have one, for any given standard of living, there is a certain minimum size that you need. And the increase in costs in housing severely limit the flexibility that you might have in other areas.

I was mainly replying to your assertion that it isn't 2-3X more expensive to live in the Bay Area than the Midwest. I'm sorry to tell you that it is.