Whoa, don’t pull back the curtain too much. But yeah, it’s definitely a plot convenience. In addition to your very good point it was also a way for Herbert to

Whoa, don’t pull back the curtain too much. But yeah, it’s definitely a plot convenience. In addition to your very good point it was also a way for Herbert to make transportation through space a monopoly. Technology can be stolen but without computers the Spacing Guild pilots were the secret sauce.