She may (or may not) have acquired substantial personal wealth at a young age depending on future interest rate movements and property values. What is clear is that she hasn't actually produced anything in terms of economic activity. All that really happens where individuals own half a dozen or more properties, and other people rent from them, is that the relationship of those individuals to property is changed. 30 years ago 85% of house purchases were for owner occupiers, now it's closer to 50% with the trend moving downward. Stories such as this are actually symptomatic of a negative social economic phenomena, IE: A product that is essential to human life, being made less affordable. Rather than the tax system giving incentive to investors, on a relative basis the incentive should be to the first time owner occupier.
