Ford has invested much capital into its digital and software services, and it's a move that could pay off.The automotive industry is extremely capital intensive, a drawback that has long been discussed by investors and analysts alike. Mainstream automotive businesses -- unlike unique automakers such as Ferrari, which boast luxury-like margins -- are notoriously low margin and competitive. The good news, especially for Ford Motor Company (F -0.68%) investors, is that this low-margin business could be on the ...