I put quotes around the phrase ("have an obligation to their shareholders to be profitable") because even though it's not technically true, it has become a self-reinforcing platitude. Investors enforce that "rule", regardless of the actual law. If Blizzard-Activision said "we are willing to forgo the massive Chinese market and also we want Tencent to immediately divest from their 5% ownership stake", institutional investors would run, and the owners of capital would squeeze hard (as we have seen with Blizzard-Activision, which, to date, hasn't backed down).

That's the system we have.