That's the unicorn way. Tech companies are encouraged, practically forced, to overspend in an attempt to show "hockey stick growth". This strategy has two positive properties for the investor: it ensures that the entrepreneur will be back before the VC to grovel for more cash in the next 24-36 months, and it gives the VC a way to kill investments he doesn't believe in anymore, despite what is a conventionally respectable and sustainable growth rate, by refusing to provide that infusion. Since most founders are naive 20-somethings, this trick works.
