That seems right. Indeed, natural resources are actually sufficient to make everyone prosperous, but they are not enough to satisfy the greed of one human being. That is why Smith calls humans creatures who are never satisfied. This quotation express the phenomenon.
"But the principle which prompts to save is the desire of bettering our condition, a desire which, though generally calm and dispassionate, comes with us from the womb, and never leaves us till we go into the grave. In the whole interval which separates those two moments, there is scarce perhaps a single instant in which any man is so perfect and completely satisfied with his situation as to be without any wish of alteration or improvement of any kind" (Smith, 2007: 266-267).
Yes, it is true. If apes observe that one of them hets too little food, they share. The increasing narcissism and the immunity for other people's pain and lack of empathy for suffering and other's needs it a curse.