I cannot speak for every country nor did I mean to leave the impression. I was speaking for the US alone.
And calling it 'economics' does not make it right, correct, ethical, nor humane.
Economics is a science. It is not about fair or humane. It is about theories, laws and hypotheses. It is not a judgement, it is a statement of facts. Economics is not Judicial, so it has nothing to do with what is legal. Economics can chart a course, but not pass a law. Politicians must do that. Economics sometimes influences their decision, but mostly it does not.
But you are wrong again. The "invisible hand" as you call it (correctly) is not about some god doing something. It is about what happens when people are allowed to make decisions for themselves. I cannot predict what you will do based upon economics. But I can predict, using economics, what a community will do. Thus we get things like the law of supply and demand. If you have ever bought something on sale, you have followed the law. If you have ever refrained from buying something that was too expensive, you are following the law.
YOu seem to be under the mistaken impression that economics is a set of rules established by oligarchs to "keep the people down" when in fact it has nothing to do with fat cats in smoke filled rooms (which are actually the antithesis of economics and free markets). Economics is a science. Like Physics or Chemistry. You may not like the fact that all objects have a gravitational effect which pulls you to their center, but then physics does not care. The same with mixing a base with an acid. You may not like the results, but that does not change them.