Probably won't work in Vicky 3. The industries foreign investors would be after would likely just be extractive, and due to slow pop growth (or even decline) in smaller, poorer countries, the interest groups you need to go commie (trade unions, mostly) won't be able to get big enough. IMO this new DLC is largely the devs just throwing up their hands and giving up because they STILL can't get countries to extract oil on their own in the late-game.