Guardian photo montage of gated communities

[River Song]

I see the difference you note but in principle i cant see the difference.
Even the posh gated communities are groups of individual homesteads but as you say rather than each home having its own backup power etc etc they appear to be inbuilt in the design.

I cant help feeling that if a group of preppers got together they would be 'gated'. It's not just TPTB that inhabit these. There are too many of them.

Just double check that your objections/observations are based upon the fact that these folks have money.