New life for old software and capacity issues?

Strange as it may seem, some major companies are abandoning their “best-of-breed” warehouse management software (WMS) and going back to their legacy systems ….why can be summarized as: control, customization, and cost.   
Inventory expressed as a ratio to sales has risen sharply…as sales have fallen and companies have invested in Just-in-Case inventories: 
As a side note, with sales of staples rising, some shippers are seeing shortages of trucks.  For example, Walmart is falling behind on its pickups.  Seems out-of-line when over-all tonnage is down.  And look at the driver wages offered by Walmart in Mississippi….