From the article: Following the 1997 agreement between Apple and Microsoft, there was a surface appearance that the two companies were now working as partners instead of rivals.
In many ways, this was actually true. Microsoft not only delivered the critically important update of Office 98 for the Mac, but also invested in developing Internet Explorer 4.0, which shipped with Microsoft's Java virtual machine for the Mac OS.
Without Microsoft, Apple would have been left to rewrite ClarisWorks, develop its own Java VM, and try to salvage the remains of its OpenDoc-based Cyberdog web browser, which it had just retired months earlier.
Alternatively, Apple could also depend on other third parties, including Sun for Java and Netscape for its web browser. As Apple headed towards apparent ruin however, third parties were increasingly dismissive of the Mac platform, making the agreement with Microsoft extremely important.
Another quote from the article:
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This is one of the best articles I have seen about the M$ vs Apple situation this author did there research and made very credible points. I understand the situation much better now and I am excited to reference this article in my school report on apple, it has a lot of the information I was looking for.