Originally Posted by
hazelrah
I'm not sure what your point is, other than a historical treatise.
The point is that MDW is not a valid comparison for DAL. MDW is owned by the same airport authority as ORD and functions as a non-slot-constrained extension. In comparison, DAL is size constrained and administratively separate from DFW.
DCA and LGA are much better comparisons, and similarly rotten slot trade deals that are bad for travelers have happened there as well.