Long time users of Seymour Duncan pickups, Diamond Guitars (formerly known as DBZ Guitars), don’t just use our most favorite pickups the JB and ‘59 in many of their guitars, they started designing pickups of their own with us.
I'm really digging the Japan only Ibanez RC2720 with the P Rails!
They're now gone, but Hamer used SD pups for quite a few years.

Huh. Looking at those guitars kinda makes me feel like I'm not SD's target audience.
Huh. Looking at those guitars kinda makes me feel like I'm not SD's target audience.
I didn't see the Charvels on that blog. I've already got my order in for one of the new Charvel Warren Demartini Pro Mod guitars.
Love me some RTM and Quarterpound action.
:headbang:
Huh. Looking at those guitars kinda makes me feel like I'm not SD's target audience.
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I doubt this is the Seymour Duncan company's fault.
I have no idea who buys late-80s style Super Strats.
"Fault" is, by far, too strong a word.
And no, SD obviously isn't in direct control of what models instrument manufacturers put their pickups in, but the fact that those manufacturers, many of whom offer a very wide variety of instrument styles, are choosing primarily to put SD pickups in guitars aimed at the shredder (I guess? I have no idea who buys late-80s style Super Strats.) and metal crowds suggests that those are the markets where they think SD pickups will have the most impact.
And if those are the audiences most interested in SD pickups, then I am not typical of an SD fan. Not an insult; just a realization that, while I wasn't looking, the world done gone and turned.
Certainly not any of the live bands I see.
As far as your second point i think it probably has to do with whatever traditional style you like, the manufacturer has decided to go in a different direction - or stay with something that is core competancy. For instance if you're a PRS, fender or Gibson guy you know that they manufacture their own pickups in house and would not substitute their own for another maker.
If your a fan of smaller builder stuff they may be using an equally smaller pickup manufacturer that has marketing appeal that their clients share an affection for. Someone buying a custom 1 off guitar expects a custom 1 off pickup, not a JB
Clearly someone must. Probably guys a little older than me, who grew up thinking those were the coolest. I came of age at the very end of that era