INTJs are like that too, but they see the whole picture and still want to push the product to completion. Contrary to INTPs, they are not satisfied with just solving the technical problem, they want some elegant closure as a whole through deployment. But they still have a hard time completing those last little tasks to cross the finish line, because it's already crossed in their head through their vision.
Incidentally, readers might think that this is psychobabble, but as an ENFP with ENTP/INTP tendencies, I've continually struggled with starting projects that I never finished. Then I met my cofounder. He's INTJ/ENTJ. In our working relationship, he's continually pushing towards completion. The amazing thing is that then completion actually happens! It's wonderful!
