Heh. you have not disappointed, my friend. It's a rare thing, in this day and age--a man who truly lives up to his reputation.
It's more likely that they welcomed foreign capital for the same reason the US Republicans did from the beginning until late 2015: because they are owned by the only class of people who benefit from globalism.
Mao, on the other hand, was an marxist (not a blue-haired genderqueer pokemonkin "marxist"), which means he was aware that open borders drives the wages of native workers down and that the flow of capital unrestrained by national interests was bad for everyone other than the elite investor class.
If you learn one thing in the next year, make it this: globalization has ALWAYS been a right-wing priority. What do Right think tanks like the Cato institute, Adam Smith Institute, the one named after Ayn Rand, etc say about globalization/open borders? They don't really say much at all, actually, its more like some sort of squeal/yelp of approving glee.
Do Trade unions, the backbone of the democratic party until very recently, support globalization? Did old school leftists like Bernie support it? Of course not! Why would the poor folks support a policy that only benefits the rich folks?
You should try reading this Marx fellow you're always complaining about, Arryson. You may find that the world is a rather more complicated place than you first assumed.