Assuming that it is it the billion dollar multi-storey automated apartments that you are referring to (rather than the financed cookie-cutter automation package at the bottom of the page), it can be amusing for the rest of us to see how billionaires spend their money.
There are now several alternative systems for ordinary folk to consider who wish to automate their homes, and home automation is becoming mainstream for people building or renovating. There are also ways of progressively automating an existing home, and spreading the cost, without involving and paying a finance company.
The most important thing for most people is to achieve good value, so that the customised automation that they have installed in their home really works for them in ways that they find genuinely useful. Good home automation is a utility for the home occupants, not a gimmick for impressing others. While this is what good mainstream home automation is all about, it is usually the more outrageous "money is no object" installations that capture the attention of magazines and other media.