Anyway in along with the first mac a bit later came the laserwriter and customers started using that for camera ready copy (canarie in the coal mine was only 300dpi way below photographic quality). Later linotype built a rip that could interface a Mac 512k (iirc) with the linotype (about 1985). I spent almost 6 figures on a linotype and became a service bureau. The minute I saw that you could draw a box on a Mac around type (with traditional systems you needed to essentially program this) I knew what would happen. That said I was in my 20's most others in my business didn't see it the same way since they were older.
Parent commenter - what was the age of your father at the time he had this revelation?