Defensibility is pretty much one of the first topics raised by every investor, and thus ingrained into every founder: What is our moat? (e.g. how do we ensure no one else gets into our space until we're ready to choke out their air supply).
The word that is not used often to describe their worldview is the most accurate: medieval.
It isn’t just jargon. They are building castles against perceived enemies and everyone is an enemy. They are striving to be the Normans taking England, embedding themselves in every realm, region, barony, and parish, rewriting the rules in the name of progress either by woo or by force, and eliminating the natives. Up go the walls, round go the moats, and out point the guns.
The last startup I worked at was primarily concerned with loyalty above most else. Loyalty to what?