Original?
Not really.
Xerox laid the ground work for this type of system, and then over priced their systems (as did Apple with the Lisa).
The Amiga was also slightly over priced, but in comparison it was much more of a commodity priced appliance.
Inevitably everything went in this direction.
Ease of adoption and intuitive use sold this approach.
But again, original?
No.
There's nothing new under the sun, but at the time it was made and even a few years thereafter, the Amiga was untouchable for the price. Nobody can deny that. If they do they're lying.