Trouble is, any setup is only 'perfect' until something changes. Like the weather getting more humid, the strings starting to 'go off', how hard you pluck at your next gig, and so on.
Setting up a bass is not a 'thing', it's a process. It's never perfect for more than a brief period before the next tweak is due.
Probably the best comparison is with tuning. My Status Streamline stays in tune for unfeasibly long periods, but no matter how perfectly I tune it, sooner or later I will need to tune it again.
You wouldn't pay a guitar tech to tune your bass, would you?