Suppliers, distributers, product extenders go from helper to competitor
T-Mobile’s $22.1 million disadvantage to AT&T; Arby’s pays more than Burger King
Market concentration, price and quality drive choice of firms
Do for-profit supermarket chains tolerate higher-priced co-ops?
Over- or underperformer? Responses vary widely
VC money for tech pushes up costs for everyone else
With a business model built on fewer employees, their dominance saps dynamism.
Researchers refute earlier claims