Because, depending on local regulations, it can be a PITA to deal with tenants. Receiving rent can also be considered as income, so now you have to deal with th

Because, depending on local regulations, it can be a PITA to deal with tenants. Receiving rent can also be considered as income, so now you have to deal with the tax authority. If the main goal is to park the cash somewhere outside the person's country, they presumably have "enough", so they don't want to deal with all this.