A foreign investment policy would fit perfectly into the current game. The more restrictions on foreign investment the more poorly your economy performs. The less restrictions the more dynamic the economy becomes, but this will upset the patroits and to a lesser extent trade unions. You could even have situations like a foreign takeover bid for a company in a strategic industry like oil & gas.
Here in Australia companies owned by the Chinese government have been trying to buy up iron-ore companies, so that they can control the iron-ore price, and the take-over bids have been blocked.