Nothing. A single contractor in a pick-up truck needs a book-keeper, a phone system, product samples and a computer system the same as we do. Blackdog becomes more financially efficient because each of those individual overhead items is supported by ten to fifteen jobs at a time, not just one.
The individual contractor continuously loses time by having to jump from task to task; design a plan, price a materials list, swing a hammer, schedule a sub-contractor, answer an emergency warranty call. Blackdog works more quickly and accurately by allowing employees that specialize in each discipline to focus on what they do best without time-consuming distractions.