Been there, done that...they are called Christian communes...
Seriously considered joining one in Texas (not Waco) in the early 80's after I got saved...
Unfortunately, people are still sinners and what sin affects living in a normal life also affect those who commune together even in a Christ centered environment...
Rarely, if ever, it works long term...
It's also pretty hard to reach the world behind your walls...
They will be different now...we are entering into a very dangerous, violent era. There will be many injustices and deprivations. These things will tend to put the smaller issues you witnessed aside. Historically, this is often how communities began and how many thousands were saved both mortally and immortally.
God will protect these enclaves to much extent...