A better way to phrase the question would be 'when will amazon stop reinvesting every cent of gross profit into growth (AWS, fire phone etc all have large Capex

A better way to phrase the question would be 'when will amazon stop reinvesting every cent of gross profit into growth (AWS, fire phone etc all have large Capex that could have been booked as profit). In my opinion the answer to this question is whichever comes first of Jeff Bezos dying, amazon being the largest company in the world or amazon imploding and going broke.