Pre-2008 was crazy, so many tv shows (UK) about having renters fully pay your mortgage and earn a little bit extra. Pretty much viewed as free-money if you could pony up the initial investment. So many people complaining when the bubble finally burst.
Rentier class has always been viewed as parasites even by the old-school free-market thinkers. It's only been the growth of the middle class during the 20th century that's turned it into an aspiration. So there's a lot of arguments about it being an easy way for someone to become a petite beourgois from nothing vs invisible-hand advocates who believe they are skimming money from the true innovators of society.
Rentier class has always been viewed as parasites even by the old-school free-market thinkers. It's only been the growth of the middle class during the 20th century that's turned it into an aspiration. So there's a lot of arguments about it being an easy way for someone to become a petite beourgois from nothing vs invisible-hand advocates who believe they are skimming money from the true innovators of society.