Blackrock does not have any political motives at all, and is purely interested in management competency and money.

Tencent, despite being a for-profit company, may still have political motives pushed onto them from the very top. This is true for all chinese companies (because if they don't "comply", the very public example of jack ma is the answer).

Now, of course, it doesn't mean this power is utilized all the time or everywhere. It simply means that the opportunity exists for such power to be weld if the state calls for it. Just because it hasn't happened so far doesn't mean it can't. It's different from Ellison Lawnmower, because the political differences between the countries.