There is a saying in business: Under-Promise, Over-Perform, or Over-Deliver.

SpaceX does the opposite of this.

It literally doesn't matter though: everyone and their mother are buying falcon 9 or heavy launches. SpaceX accounts for almost 90% of the world's launched upmass. They are simply the cheapest most reliable option out there and it is not close. The only reason not to fly on a SpaceX rocket is national security or wanting to keep your own domestic launch industry alive.