The people who work with him know they have to produce on a time schedule or they will not only lose this project but future ones. For example, huge savings were achieved by selling units on a general floor plan and not doing the expensive working drawings until most of the units were sold. Money was not invested in engineering before the place was ready to be engineered. Competition in construction is very high. The margins are very narrow.
Time is money.
Professionals don't have time to spend educating and hand holding the inexperienced. And the inexperienced don't know what questions to ask to avoid problems. An experienced developer is essential. On and on. But the project will be built and occupied in less than two years.