[Protagoras]

Uh, does anyone own a million-dollar home with no security system whatsoever?

A million dollar home isn't as rare as it once was. Living in New York you should recognise this. :-)

[NativeNewYorker]

When I'm over flyover country, I see what looks like A LOT of empty land, which I assume puts a lid on how much any one unit can cost. :)

Seriously, NYC is a maximally developed, super-heated island anomaly, bearing little resemblance to places like SLC.