You've gotta believe in the cause, which is really just a narrative used to promote extended work hours and grind.
Then you've got to evangelise and act as a missionary for this world changing product ... the business has a cult like sheen of "changing the world" and everyone is the smartest person in the room just for being smart enough to be there.
Behind the bullshit narrative, everyone is overworked and the directors so busy chasing their exit with their legs and stroking each other off with their hands that the only tool they have left is their mouths. Out of which spews thinly veiled promises of a great product to hide their greed.
It's all the same really.