True when the definition of crime and the procedures around punishing crime borders on even serious crime I would question if the crime should be crime in first place or not.

If USA had unleashed its capitalistic hounds and allowed Target and Wallmart to deal in drugs El Chapo and many people like him would either be selling tacos on a food truck (euphemism for honest hard working job) or be shot dead in some alley as result of their non-lucrative crime.

Drug industry has been super innovative and invested their mental energies in drugs. If the drugs are channelised they will get invested into something else which might actually lead to good result.

No it's not.

Justice is not necessarily about revenge.

In some justice systems (like the US) it is, but in others justice is also about rehabilitation.

Another part of justice is deterrence. Please take a moment to consider how this is also different from revenge.

Revenge is a personal individual emotion that can sometimes be enjoyable. In my very personal opinion, revenge is not justice and only tangentially related to deterrence, and rehabilitation is the most important thing about justice.