imperialism, state policy, practice, or advocacy of extending power and dominion, especially by direct territorial acquisition or by gaining political and economic control of other areas.
Not taxing your citizens, is not imperialism. Luxembourg is not an imperialist country.
The process that you're describing is called free trade. As soon as the global south doesn't want to partake in this trade, they can stop. And Luxembourg wouldn't have anything to say on that matter.
Y'know, I was expecting a word salad of being called an incel, instead this is just a word salad of calling everything a monopoly. Half of the things you point to here are governmental actions, not capitalism. Capitalism is an economic system, not an ideology, it doesn't control what the government should or shouldn't do. And none of it even relates to the topic at hand, which was colonialism.
And financial oligarchies are 100% just a hallucination, prettied up in fancy words so it sounds like you're making an argument. You do not need permission from an oligarchy to make financial transactions.
If the global north would stop trading with the global south, to "fix" this supposed exploitation, people like you would be the first to start crying about how an embargo on the south is preventing them from moving up the value chain in production. There is no logic here, just accusations. You have nothing to show but an attitude
Mate, even the majority of socialists disagree with this view, let alone someone who is critical of socialism.
The USSR was a dictatorship full of nepotism and corruption, where you could get jailed for the dumbest reasons, ranging from being gay to practicing karate. None of these rules were established by workers and all of them were created by the bureaucracy.
You could argue that they've never been socialist, because like every other attempt it just devolved into military dictatorships. The effects of that attempt are still present today. Take any political or social map of Germany and you can still see where the old borders were
Private property and freedom of association are core aspects of capitalism, colonialism did none of those things. Capitalism didn't arrive in the colonies until the colonists left.
Talk with some actual capitalists, and they'll all tell you that their core values are pretty much the opposite of whatever you're describing here.
Capitalism is simply the most successful system in the world, so it's an easy target for edgy teens who want something to blame for their failures.
But please do tell me how I'm exploiting the world, or how I'm violent or racist. Maybe you can call me an fascist incel so the word salad has all the cool things kids say nowadays