President Donald Trump authorized an inquiry on Monday into China’s alleged theft of American technology and intellectual property, a problem US companies have faced for decades when they do business in China.

The inquiry will look at China’s practice of mandating that foreign companies partner with local firms. In the course of those partnerships, companies often feel pressure to give their intellectual property to Chinese firms, the US Trade Representative wrote in a January report.

But giving up some of intellectual property to local Chinese companies may be the cost of doing business in China, which is quickly becoming a technology powerhouse. Moreover, rules set by World Trade Organization (WTO) rules give China wide latitude in restricting foreign investment, which may complicate any potential investigation by the Trump administration.

Entering the Chinese market comes with risks

For US companies, gaining access to the world’s second-largest consumer market comes with risks. As a condition of operating in China or gaining a more favorable market presence, foreign companies may need to operate with local partners.

By doing so, US companies can take advantage of low production costs and local expertise, but may be coerced into sharing their intellectual property, as the Department of Commerce has warned.

Douglas Clark, a Hong Kong-based intellectual-property lawyer, thinks foreign companies are not usually “forced” to hand over their intellectual property. “But if you want to do business or invest in China, you’re encouraged to transfer technology,” Clark said. “There are certain calculations you make. It’s always a cost-benefit calculation for every company.”

Though it’s a company’s own call to do business in China or not, some argue market access shouldn’t be contingent on transferring technology.

For certain industries like airplanes and automobiles, the Chinese government has been clear on requiring foreign companies to form joint ventures with local firms, due to concerns over national security and the desire to have foreign partners use advanced technologies and management practices.

Take China’s fast-growing automotive industry. Back in 1980s when automobiles were nascent in China, officials directed foreign carmakers such as General Motors Co. (GM), Toyota Motor Corp. (TM) and Volkswagen AG to form joint ventures with locals and capped foreign investment at 50%.

More recently, the high-tech industry has become the main battlefield for China and US competition. To capture market share and gain favor from the local government, American tech giants like Intel (INTC) Qualcomm (QCOM) partnered with local chipmakers. The tradeoff is to support Chinese companies with chip development and design.