McDonald's gave up on winning the 2 biggest battles in fast food — and business is exploding (MCD)

McDonald's is de-emphasizing speed and value as the chain evolves. 
Typically, quick service and dirt-cheap prices are fast-food chains' biggest weapons. 
McDonald's sales have been soaring recently. 
 
McDonald's has changed its priorities — and it's paying off for the fast-food chain. 
For a long time, the end-all, be-all in the fast-food industry was a race to the bottom on value and speed. If menu items got too pricey, customers stopped showing up. Same f