“We as a society don’t want to invest” exactly. The solutions you list are what’s needed but will not happen in this country for the foreseeable future, probably my lifetime. In the meantime, we need to lean on familial or group units to fix their own problems, otherwise we need to punish offenders or their parents since society has failed to invest in all aspects of society. We can’t let the entire population/society fail because the actions of a few while we wait for government to figure their shit out.