The games and utilities are there because of Office, not the other way around, and both were made in huge amounts for other systems, then retreated, and are getting ported back to e.g. macs only now (think Autodesk stuff), and this is more due to Office becoming less relevant than anything else.
No so sure I buy that.... for one thing most components of the Office suite were available (Yes, from Microsoft!) on the Mac years before they shipped for Windows.
