I think this is a perfect example of single mode network thinking. Yes the rail lines don't go to the back of the Best Buy but they shouldn't. The rail lines do certain jobs well and trucks do other jobs well. Why not work together?
In transit, my favorite example is the CityCargo tram. Yes it's a tram that delivers cargo, but it has little electric trucks to deliver directly to the door to merchants in Amsterdam. It only works with both modes.