The poem sets two things against each other: the living world and the pull of money. The title, "Developer," suggests two meanings. A developer might be someone who builds on land, or someone who brings a photograph out of the dark. Either reading fits the opening claim that a deer is "more than ink," something real that can't be reduced to a drawing, a word, or a number on a page.
The speaker then turns sharply. Chasing profit, he says, "will make a man bland." The word is blunt and a little contemptuous, as if the desire for gain wears away what makes a person interesting. The closing images are bleak. A "lone shoe" is the kind of thing you see abandoned by a roadside, cut off from its pair and its owner. Then comes the unsettling "corpse I find in my head." The mood is quiet but uneasy. The speaker seems to feel grief, and perhaps some guilt, about what gets lost when people stop seeing the living world.