[majewsky]

When you're a billionaire, you can employ dozens, if not hundreds of people, to do tedious optimizations for you all day. And if that's the difference between 5% and 10% RoI, those people even pay for themselves (and then some).

[mafuy]

That is all well and good, but did you consider that it would mean that your house would become tainted with the poority of someone who cannot even afford to not live in it? Who knows if it's infectious? It would become a cheap second-hand house. And there's like a bunch of random strangers, one of who might be a serial killer. Better to just stay away from that.

... is how imagine their thought process.