I've heard the same thing but it still begs the question, if companies are buying these to rent out, who is renting them? On FB marketplace I see 3br/2ba 2 story suburban homes for rent in the $2500 - $4000 range, which seems nuts to me. If you've got $2500/month to spend on housing, why on earth would you rent?
And yes, I know people do it, but again, it just doesn't seem to be sustainable to me.
What am I missing?