These things are always so dumb. The question is not "Does a $10K bass sound significantly better (whatever that even means) than a $200 bass?" The question for a working pro is:
Does this thing feel ergonomically comfortable when I'm playing for hours every single night, 100+ days per year, for the next decade?
Is it stable and reliable enough that I don't have to worry about something breaking down or failing on stage or on the road?
Does it combine with all the other elements of my rig, the stage rig, and the overall band's needs and goals to sound the way they are paying me to sound?
Is it easy to play so I stay healthy and minimize the wear and tear on my hands, joints, and tendons?
Maybe Joe Blow can't hear the difference between a pawnshop P-bass and a custom Sadowsky, but a touring pro might FEEL a big difference on their hands and shoulders by having a higher quality instrument.