I know, but Marlo was a thug, he was never interested in the "business" side which was something Stringer hoped/worked for all along. His punishment was the fact he couldn't go back to drug dealing(that was part of his release) so he was introduced to businessmen and contractors beacause he had the money from his drug dealing. Marlo is lost in that world, that was something Stringer longed for; to become a respected businessman. If Marlo could chose to die like Stringer did or be drawn into the business or politics, he'd choose death. That's the irony.
But are we to assume that he does carry on with Clay and those developers and stay off the streets? Because in one of the last scenes he goes back to one of his corners and fucks up the hoppers that are standing there.
