rent doesn’t exist in principle, it exists in practice. and in practice, the history of rent is a history of wealth extraction. if its “perverted” today, it definitely was 10, 20, 30, 40, 50, 60 years ago. if you aren’t aware, this is a pretty basic leftist thing. if property can be held privately, those who own the property can use that ownership to extract wealth from people who need water, food, and shelter, but do not themselves own property. they can use that extracted wealth to buy more property, depriving ever more people of places in which to live their lives without paying somebody else for the privilege. and so on. thus “private property is theft”.
in any case, rent isn’t an uncontroversial example of how to fairly pay people who do things. rent is deeply political, and has been for most of modern history. it isn’t just common sense that we ought to allow people who own things to make money off that ownership, that’s a political statement, and one that should require some justification, considering its material impact on poverty, homelessness, and the accumulation of wealth.