I don't think you're familiar with the topic. Nearly every single person who goes to jail will be released and may become your neighbor. I suggest you research the subject instead of pulling anecdotes from your ass.

" the stats don't indicate any persistent institutional success despite decades of effort and rotating fashions"

This is the exact problem that fuels mass incarceration and costs us tax payers and society infinite sums. In some places, even in Texas this model has been rejected because it's more expensive for tax payers to jail everyone.

Let's spell it out for the obstinate:

Jails have incentive to fill beds.

Jails have incentive to not rehabilitate.

Inmates go to jail and become worse because they're in a bad place.

Inmates are released with hostile support (probation).

Jail bed gets filled.

....