Textiles of course has an obligatory copy: http://web.textfiles.com/destruction/hitman.txt
Replace "kill a man" with "launch a product" and "thugs" with "devs" and you get some surprisingly familiar advice.
>To buy guns, go to a poor area and find a drug dealer. Ask him where you can buy a gun. Don't forget to keep the arms dealer's phone number so you can buy more ammo later
All of those files were written by middle class white children. There's literally nothing of value in them.
It's harsh to claim that the family "wanted to profit from their loved one's murder". They obviously wanted to hurt everyone who was involved in the murder of the victim. If the publisher thinks they were in the right, they should have blamed the legal system, not the family.