I disagree that 6502 -> 68k was a "transition." The Apple II and Mac were two separate product lines. The three major early home computer companies (Apple, Atari, Commodore) all did this.
This is true, but note it was released in 1991, many years after the Mac's introduction. By that time, the Apple II was definitely on the way out. The last hold outs (schools...) probably needed encouragement.
https://en.wikipedia.org/wiki/Apple_IIe_Card