I'll bite; why do you think SpaceX was a mistake? They've had some pretty impressive achievements, all while actually making profit. Unless you meant individual errors like this month's landing attempt.
> SpaceX is proof his ventures are not immune to error.
Errors probably means errors here. As in yeah, most recently trying to land a booster on a barge and missing.
Mistakes happen. The wrong number in a configuration somewhere and everyone's car suddenly has a vampire that sucks down the battery 50% faster, or causes a misreading of wheel speed for anti-lock braking, or etc.
