Exactly
I suppose lots of things in this world
can happen. But let me ask you a few questions:
1. Have you tried either system? Do they work? You just admitted that they do.
2. Are pickups themselves shielded?
3. Are pickup cavities shielded in
most guitars?
4. Are control cavities shielded in
most guitars?
3. Is 0.5mm of unshielded wire underneath the pickup going to cause
more buzzing than there already is with regular wiring?
As far as I'm aware, the majority of guitars
do not have shielded pickup cavities, nor do they have shielded control cavities, Some do. But not most. And historically, very few do. The connections to the pots are not shielded. The connections to the switches are not shielded. The output jack is not shielded.
Some guitars do have shielded control cavities. My Mayones come with copper foil tape everywhere. But guess what... they still slightly hum/buzz like every other guitar in the world. Shielding does not stop that kind of thing, it only prevents
some forms of RF and EM interference.
Either way, if someone didn't want to use such a system, they wouldn't have to... Both companies offer their pickups with or without the quick connect system. The wiring is the same for both...
The idea here is simply wishful thinking for all these companies to adopt the same system.