First things first: large != largest.

Now, if a country has their hands in some of another country's largest companies, and many of them in key sectors such as banks, telecoms and energy, and in many cases becoming the biggest shareholder in such holdings, to the point where a countries own parliament has to hold sessions to protect their own bank's exposure to Angola, well, call it what you want, I'd call that large.

I worked for one of Portugal's great energy companies, both in Portugal and in Angola. I was working for them in Angola, when they were struggling financially because they could not compete with other European and and Chinese companies, both in Europe, South America and Africa, and I was there when the Angolan president's daughter bought the company and I was there when the company employees were relieved that deals would now become easier because the new majority shareholder also had the power to make the Angolan utility company sign new deals. In fact, the president's daughter forced the national utility to also become a shareholder. Even more, the forced the utility to also pay for her part of the shares. And the proud Portuguese company clapped through it all.