The suicidal in lower income situations could succumb to it in more subtle ways, for example heroin, crack, or meth overdose, suicide by gang, suicide by cop, etc.
If you have nothing to loose and a death wish, you go on a rampage. If you have a reputation to uphold postmortem, going that route seems to be out of question. One route would be death due to work exhaustion, which the Japanese actually have a word for: "Karoshi". The other, more direct, is suicide.
There's many ways in which a deathwish can manifest, they're not limited to suicide.
