Like everything else is a free economy, it was a consensual transaction. If Zuck offered me $1 mil for my small apartment, and said I could live in it, I'd take the deal. He purchased their homes and then leased them back to them, what's the problem here other than how it can be construed to "sound bad"?

That's how America works. It is a feudal system where the rich buy the laws, gated communities, college admissions, genes, designer babies, and pandemic vaccines they want.