I agree that you could need to borrow money for a short period of time while building a business. However, if you borrowed it at way above market rates, your first priority as soon as you were making a profit would be to pay those loans off.
Bitcoin profit margins aren't like USD profit margins. Bitcoin is throwing out tons of new coins out constantly. When factored as strictly BTC and not USD loans, the opportunity for growth is much larger than your typical USD equivalency. The reward halving will reduce this by a bunch, but its not going away entirely.