"A 500 room mansion, and collective of private jets would not count as personal property. A private jet could easily cost a million dollars per year, and very few people would be able to produce enough themselves to afford that"

In some countries a very few people are able to produce enough to afford an appartment, a Car, a Simple computer, or even a smartphone. So If you live in those countries, and you hear that argument, you probably would not consider those things as personal property. In those countries having those simple things "can only come through control of the means of production." How to define things in those cases?