ef,
Most, if not all, things one buys was put together using what could be used where the consumer can afford it and the manufacturer can make a profit. From there, improvements can be made by the ones who so see fit.
If one buy a car (a Vet, let's say) and upgrades the brakes, is it no longer a Vet?
When PK got started using Baldwin made cabinets and EV speakers, were they not Klipsch?