I’ve tried rotating at gigs before and had 2 jazz basses that I could not get to sound good in the room, a Tokai and a Sire V7. These weren’t bad basses, but I didn’t have enough experience with them in that environment, whereas the P bass never had a bad gig.
Ps. when I was at ACM, the players with the best sound only had one or two instruments but were incredibly comfortable with them. Yet Mr gear addict over here often struggled to make the most of an instrument.