Apple did not develop the Mac as a publishing system, Adobe was a supplier of Postscript and fonts used in the system in their WYSWIG display. Adobe invested and saw the value in using the Mac as a platform (the other platform Windows... was not a good platform for that at that point). Pagemaker was originally release in 1985 (was never available on Lisa and not available on the Mac platform at launch). Even the IBM PC which came out to compete against Apple II... was a home (personal) computer... not a business computer... It was entrepreneurs that saw a use for it for business (a cheaper way in to the office) **1 - related story below. From what I can remember of the Mac's introduction it was all about 'personal freedom' and fighting back against the shackles of 1984 and it's mundaneness. It was all creative focused, but it was really aimed at the home user -- using the same applications but more WYSIWIG as available already on earlier computers (Wordstar / Write WYSIWIG, Spreadsheet vs Visicalc/1-2-3, and Apple paint - used mostly for fun). Peppered throughout their presentation - it was a "personal computer" -- a computer for the rest of us (i.e. outside of the business straightjacket).You better go back and read up on Apple history. Pay attention to their relationship to Adobe in particular.
**1: In fact it was sometime in the 80s I started working on an app created in dBase II, then Fox Software... that basically managed an agent's customer contacts with tracking of customer accounts (sold for $5000 at the time)... then a bit later eventually a Mortgage System and a Mutual Fund Dealership system for much more... at one point managing a couple hundred billion dollars in a glorified dBase style filesystem (really really scarey when I think about it)...