Having a model developed with an made exclusively for them is not something that only EBMM does. Ibanez has had several pickup lines developed with Dimarzio that you only see on the Ibanez guitars. Celestion also makes speakers for Mesa, Marshall, and others that are only available to them.
If you ask Dimarzio they can usually tell you which pickups are closest to the pickups in EBMM guitars. Like, how the Zone Zone and Air Norton are closest to the pickups in the EBMM Axis.