…the key difference between the Star and the Macintosh wasn’t design, but democratization. According to Wikipedia, a typical Star installation circa 1981 cost about $75,000 — it required a network and dedicated file server — and each additional workstation had a starting price of $16,000. The 1984 Macintosh cost $2,495 (and Jobs wanted it cheaper).
Bringing the concepts of a $100,000 networked workstation to a $2500 standalone mass market personal computer is, I say, radically innovative.