Although some factories like Fbass, benavente, alembic, sadowsky, and new lakland make their own pups and electronics, I have seen lots of high-end basses like zon, modulus, roscoe, surine, brubaker, mike lull, and old lakland got installed bartolini pups and electronics if they don't have their own pups
EMG sounds great and Fodera uses EMG pups, but it seems people prefer Barts over other good pup and electronics.
so my question is why bartolini?
You are partly wrong:
-Mike Lull mainly uses Lindy Fralin or Nordstrand pickups, Seymour Duncan also a few when he do not install his own. about electronics, you can also choose Aguilar.
-Fodera ? you can choose either their pickups or Seymour Duncan's now, and it was Aero's before that time.
-Sadowsky: ask Larry Di Marzio before saying that Roger builds his own pickups. Ok, they are wounded to Roger's specs (they are good old friends after all !!

) but.... the Sado's humbuckers jazz are very similar to Di Marzio's badged ones.
-Lakland ? ahem.... they used to install some Aero's before, you should spell "skyline Lakland" for barts.... and not for xx-02 series: they are lakland-hanson's pickups and electronics.
2 facts now:
-You can also find many many many SD pickups everywhere on basses: Bartolini and Seymour Duncan are the biggest, the more versatiles groups, they can ship instantly all the pickups you need, and any kind of pickup you need !! even if it's hundreds of pickups, you can get them very shortly, and they work, not for everybody's taste of course ...
-EMG.... ahem.... they seem to be aware that 5 strings Jazz Basses or P are an important market since... not a very long time!! but ... they use their own proprietary connectors system, not reliable for luthiers: you want EMG pups, you MUST use EMG preamp....
So Barts everywhere ?? maybe... I'm a JB guy, and I see SD, Lindy Fralins or Nordstrands everywhere, that's life
