Every startup requires some level of the Jobsian RDF to exist around the founders and extend to the core team. The problem is that, for most startups, the RDF will be threatened by real-world events (nobody is using/buying/investing-in your product) and once the RDF is gone, it's very hard to keep going. That's when morale suffers. That's when founders leave. Startups die the same way because the begin the same way (and rightfully so): with a passion about an idea that doesn't necessarily conform to reality.