
McDonald’s may be known for its golden arches, and Cava for its four-letter name boldly stamped on each takeout bag, but both restaurant chains use the same letter to sum up business right now: a big K.
The respective fast-food CEOs are the latest in the restaurant business to sound the alarm of a K-shaped economy, where high-income earners are spending as if nothing is wrong, while lower-income Americans tighten their belts and pull back on spending.