Isn't passive income a cornerstone of of the Rich Dad Poor Dad Books? This long predates 2020. I would say selling masks and only being $800 in the hole is a lot better than starting a "regular business" and down $80k-800k.
You’re right. Books like the Four Hour Workweek and Escape From Cubicle Nation were guides to passive income twenty years ago.
Yes, it was the exact same scheme. Rich Dad Poor Dad was basically "Buy lots of cheap, crappy houses and become a slum lord" expanded into thousands of pages of books, seminars, and self help guides.
I've been hearing about "passive income" for at least the last 10 years, and I reckon it goes back further than that.
My memory of RDPD was that it preaches getting assets which generate income, not that your management of those assets would be passive. Though obviously it also did have a subtext of "scale some kind of assets that generate income to a certain point and you can pay someone else to do more of the grunt work while you look into a new opportunity."