A. Being the best at something does not mean that doing that thing is the best way to use your scarce economic resources.
B. In 2000, the EU controversially blocked a merger between two American firms, GE and Honeywell; the deal had already been approved by America’s antitrust regulators.
C. Some kinds of arbitrage are completely risk-free—this is pure arbitrage. For instance, if EUROS are available more cheaply in dollars in London than in New York, arbitrageurs (also known as arbs) can make a risk-free PROFIT by buying euros in London and selling an identical amount of them in New York.
D. But beggars cannot be choosers and newspaper managers have generally preferred to suffer the whims of deep-pocketed proprietors than go out of business.