https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3929243 https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3929243 They're called "vacancy chains" in that

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3929243 https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3929243 They're called "vacancy chains" in that world, but yes, they're real.