> Suburbs require gigantic subsidies to be made to work, so you need to be careful how you use the phrase "free society".

I think that you're confusing "costs more" with "is subsidized".

> Such density is economically rational.

Ah yes, another cost-benefit analysis that ignores benefits.

Here's another one.

Going to Fiji to scuba dive is economically stupid because travel from San Jose to Fiji costs money.

Whether going to Fiji to dive is economically stupid depends on the price, and the relevant prices are different for different people.