The owner who kept the building.
Sold the business years ago but held the building it ran from. Facing a ~$5M sale and a large deferred gain, they skipped both the tax check and the hunt for a replacement: a DST deferred the gain and turned one building, one tenant, one market into a stake in ~11 properties across three property types and several states. Income held up (about $95K to $110K/yr in this illustration) and they stopped being the landlord.
The trade: illiquid, passive, sponsor fees, and roughly the same leverage, not less.