Just to clarify: E***x people are not intelligent guys.
It they was smart, they simply tell everybody: -"Hey, if someone put a Crescendo/Sonnet card intended for PCI Macs in one of our Mediators, you can have a PPC Amiga!"
Surely the Mediator sells will explode!
But what they did? Cope a way to avoid people to do this (may a "lock" in one of those Mach chips).
Exactly like they do with the "Spyder", a rebadged USB card with the on-chip re-flashed to inform another vendor ID!
Sometimes, greed people are simple stupid!