For decades, companies have poured into China to take advantage of the country’s manufacturing prowess and to serve its enormous market. While firms were largely aware of potential business risks, like intellectual property theft and the need to navigate corruption, executives have been less concerned about risks to their firms’ ethics and reputation. But in recent years the situation has changed dramatically, and companies such as Google, Disney, and the NBA have to steer through a much more perilous, and in some cases impassable, ethical landscape.